1000+ Adjectives that Start with O (O Adjectives in English)

A huge list of adjectives that start with O in English with meanings and examples. These O adjectives can be used to describe a wide range of things, from people’s personalities and behaviors to the appearance and qualities of objects and places.

Adjectives that Start with O

What Are Adjectives that Start with O?

Adjectives are the part of speech that modify nouns or pronouns. The letter O is ripe with adjectives. There are several prefixes that can be added to words to make a new adjective.

  • Omni: means “all” or every.” Example: omnidirectional
  • Open: means “accessible” or “having no enclosure.” Example: openhanded
  • Out: as an adjective, out generally means “more than” or “better than.” Example: outgrow
  • Over: as an adjective, over generally means “upper” or “higher.” Example: overhead

Some of these words will include a hyphen and some may not. Regardless of grammatical rules, in casual writing, the hyphen may or may not be present.

Some words with these prefixes are included here, but there are many more possibilities.

Descriptive Adjectives that Start with O

Below are 100 descriptive adjectives that start with O.

Adjectives Examples
Oak The oak table was sturdy and durable.
Oaken The oaken door creaked as it opened.
Obligated I am obligated to pay my taxes on time.
Obliging The obliging neighbor offered to water the plants while we were away.
Oblique The oblique angle made it difficult to measure accurately.
Obliterable The pencil markings on the paper were obliterable with an eraser.
Obliterated The town was obliterated by the tornado.
Oblivious The driver was oblivious to the fact that he had run a red light.
Oblong The oblong table could seat eight people comfortably.
Obscure The meaning of the obscure poem was hard to decipher.
Observable The observable changes in the weather indicated a storm was coming.
Observant The observant detective spotted a clue that led to the culprit.
Obstinate The obstinate child refused to eat his vegetables.
Obstructed The view of the stage was obstructed by a pillar.
Obstructive The obstructive tree branch needed to be pruned.
Obtainable The obtainable prize was a weekend getaway to the beach.
Obtrusive The obtrusive salesman wouldn’t stop trying to sell us a timeshare.
Obtuse The obtuse student struggled with math.
Obvious The obvious solution to the problem was to increase funding.
Occasional The occasional rain showers kept the garden well-watered.
Occipital The occipital bone is located at the base of the skull.
Occluded The occluded artery caused the heart attack.
Occupational The occupational therapist helped patients with their work-related injuries.
Occupied The occupied restroom had a sign that read “In Use.”
Oceanic The oceanic waves were so high, they could be seen from the shore.
Ochre The ochre rocks were a beautiful backdrop to the turquoise water.
Octangular The octangular room was unique and modern.
Odious The odious smell coming from the dumpster made my stomach turn.
Odorless The odorless perfume was perfect for people with allergies.
Off The clock was off by 10 minutes.
Offbeat The offbeat rhythms of the music made it difficult to dance to.
Offensive The offensive comment made by the politician sparked a controversy.
Offhand The offhand remark was not intended to be taken seriously.
Official The official statement from the White House addressed the recent crisis.
Offshore The offshore oil rig was visible from the beach.
Offstage The actors waited anxiously offstage for their cue to enter.
Old The old house was in need of some repairs.
Olden The olden days were simpler and less hectic.
Older My older brother is six years older than me.
Olfactory The olfactory receptors in the nose are responsible for detecting scents.
Olive The walls of the kitchen were painted in a lovely shade of olive green.
Omissible The omissible details were not relevant to the story.
Oncological The oncological center provided cutting-edge treatments for cancer patients.
Oncoming The oncoming storm looked ominous and threatening.
One I only have one apple left in my bag.
Ongoing The ongoing investigation into the crime had lasted for months.
Only The only thing left in the fridge was a carton of milk.
Onshore The onshore winds brought cooler temperatures to the beach.
Opaque The opaque window film provided privacy to the room.
Open The open door invited guests to come inside.
Opening The opening scene of the movie set the tone for the rest of the story.
Operant The operant machine produced high-quality products.
Operating The operating room was sterile and well-equipped.
Opinionated The opinionated talk show host never shied away from controversial topics.
Opponent The opponent team played aggressively and fought hard to win.
Opportunist The opportunist businessman used every opportunity to make a profit.
Opposite The opposite sides of the street had different architectural styles.
Optic The optic nerve transmits visual information from the eye to the brain.
Optional The optional essay assignment was worth extra credit.
Oral The oral presentation was well-prepared and delivered.
Orange The orange sunset was a beautiful sight to see.
Orbital The orbital space station circled the Earth every 90 minutes.
Orchestral The orchestral performance was breathtaking and awe-inspiring.
Ordained The ordained priest presided over the wedding ceremony.
Ordeal The car accident was a traumatic ordeal for everyone involved.
Ordered The ordered list of tasks helped me stay focused and productive.
Ordinary The ordinary life of a typical suburban family was the subject of the novel.
Oriental The oriental rug in the living room added warmth and color to the decor.
Ornate The ornate architecture of the building was a testament to the skill of the craftsmen.
Orthopedic The orthopedic surgeon performed a successful knee replacement surgery.
Orwellian The Orwellian society in the novel was a warning against the dangers of totalitarianism.
Ostensive The ostensive examples provided by the teacher helped the students understand the concept better.
Other The other car in the accident was a blue sedan.
Out The batteries in the remote control were out, so I had to replace them.
Outbound The outbound flight was delayed due to bad weather.
Outdoor The outdoor concert was a fun and memorable experience.
Outgoing The outgoing personality of the host made everyone feel welcome.
Outlandish The outlandish outfit worn by the singer caused a stir on social media.
Ovation The standing ovation at the end of the play was well-deserved.
Overage The overage athlete surprised everyone by winning the race.
Overall The overall performance of the team was impressive.
Overcast The overcast sky made the day look gloomy and depressing.
Overcoming The overcoming of personal challenges can be a source of strength and resilience.
Overhead The overhead cost of running a business can be a significant challenge.
Overland The overland journey through the desert was long and arduous.
Overly The overly dramatic performance was criticized by the reviewers.
Overnight The overnight snowstorm left the city covered in a thick blanket of snow.
Overshot The overshot arrow missed the target and landed in the woods.
Overstuffed The overstuffed suitcase was difficult to close.
Overt The overt hostility between the two rivals was hard to ignore.
Overweight The airline charged an extra fee for overweight baggage.
Own The decision to start her own business was a bold move.
Owned The owned property was sold at auction.
Ownerless The ownerless dog was taken in by a kind-hearted neighbor.
Oxidized The oxidized metal had a greenish color and a rough texture.
Oxlike The oxlike strength of the athlete impressed the spectators.

Positive Adjectives that Start with O

Below are 70 adjectives that start with O that indicate something positive.

Adjectives Examples
Obedient The obedient dog quickly sat when its owner commanded it
Objective The journalist strived to provide an objective report of the situation
Obligated The doctor felt obligated to help the injured person
Obliging The obliging neighbor offered to water the plants while they were away
Observable The changes in the sky were observable throughout the day
Observant The observant detective spotted a clue that others had missed
Observational The scientist conducted an observational study on the behavior of rats
Obtainable The book was easily obtainable at the local bookstore
Obvious The mistake was so obvious that everyone noticed it
Occurrent The earthquake was an unexpected occurrent event that shook the entire city.
Official The official spokesperson made a statement on behalf of the company
OK The performance was OK, but there was room for improvement
Okay “Okay, I understand what you’re saying,” said the student
Olympian The athlete’s Olympian strength helped him win the gold medal
Olympic The Olympic athlete trained for years to compete at the highest level
Omnibus The omnibus bill contained many different provisions
Omnidirectional The omnidirectional antenna picked up signals from every direction
Omnipotent The dictator believed he was omnipotent and could do whatever he wanted
Omnipresent The idea of God as omnipresent is central to many religions
Omniscient The character in the story had omniscient powers and could read minds
On The TV was on, but no one was watching it
One The one remaining slice of cake was saved for the guest of honor
Onetime The onetime event was a celebration of the company’s anniversary
Ongoing The ongoing project was behind schedule
Open The door to the classroom was left open, letting in a cool breeze from outside.
Online The online store offered a wide selection of products
Only The only book on the shelf was a dictionary
Opalescent The opalescent colors of the butterfly’s wings were mesmerizing
Opaline The opaline vase shimmered in the sunlight
Opened The opened window let in a cool breeze
Open-ended The open-ended discussion allowed for a wide range of opinions
Openhearted The openhearted stranger offered to help the lost child
Opening The opening scene of the movie set the tone for the rest of the story
Open-minded The open-minded student was always eager to learn from different sources
Operable The machine was operable after the technician fixed the broken part
Operant The operant conditioning experiment showed how behavior can be modified
Operatic The operatic performance left the audience in awe
Operating The operating system of the computer controlled all its functions
Operational The company’s operational plan was designed to increase efficiency
Operative The operative word in the sentence was the key to understanding its meaning
Opportune The opportune arrival of the taxi saved them from missing their flight
Opportunist The opportunistic politician changed his stance to gain more votes
Opportunistic The opportunistic salesman tricked the elderly couple into buying a product they didn’t need
Optimal The optimal time to plant the seeds was in the early spring
Optimistic The optimistic student believed he would do well on the exam
Optimum The optimum temperature for the experiment was between 25 and 30 degrees Celsius
Optional The optional essay assignment was worth extra credit
Opulent The opulent palace was a symbol of the monarch’s power and wealth
Oracular The oracular words of the old wise man guided the young prince
Orchestral The orchestral music filled the concert hall with a beautiful melody
Ordained The ordained minister performed the wedding ceremony
Ordered The ordered list of tasks helped the team complete the project on time
Orderly The orderly workspace helped the employee work more efficiently
Organic The organic fertilizer improved the soil’s fertility
Organized The organized files made it easy to find the document they were looking for
Orientated The company’s marketing strategy was orientated toward younger customers
Oriented The new employee was oriented to the company’s policies and procedures
Original The original concept of the movie was a fresh take on the classic story
Originative The originative artist produced unique and creative pieces of art
Ornamental The ornamental flowers added beauty to the garden
Ornate The ornate architecture of the building reflected the style of the era
Orotund The orotund voice of the actor commanded the attention of the audience
Orthodox The orthodox religious ceremony followed strict rules and customs
Over The over-packed suitcase was too heavy to lift
Overabundant The overabundant rainfall caused flooding in the area
Overall The overall performance of the team was excellent
Overjoyed The overjoyed child opened the present with excitement
Overt The overt hostility between the two countries escalated into war

Negative Adjectives that Start with O

Related: Negative Adjectives

Below are 50 adjective words that start with O that indicate something negative.

Adjective Meaning
Oafish clumsy, stupid or uncultured
Obdurate stubborn, unyielding, and inflexible
Obese having an excessive amount of body fat
Objectionable causing offense or disapproval
Obligated required or bound to do something
Obligational relating to a legal or moral obligation
Obligatory required by law, rule or obligation
Obliterable capable of being destroyed or erased
Obsessive excessive, unhealthy preoccupation or fixation
Obsolete outdated, no longer in use or current
Obstinate stubborn, refusing to change one’s opinion or course of action
Obstreperous noisy, unruly, and difficult to control
Obstructed blocked or impeded, preventing movement or progress
Obstructive causing blockage or hindrance
Obtrusive noticeable or prominent in an unwelcome or intrusive way
Obtuse slow to understand, insensitive or dull
Obvious easily perceived or understood, clear or apparent
Occluded blocked or closed off, preventing passage or access
Occult supernatural, mystical, or magical beliefs or practices
Occupied taken or in use, already being used
Odd strange or unusual, not fitting in with the norm
Odious extremely unpleasant, repulsive or offensive
Off not correct, inappropriate, or unwell
Offensive causing offense, insulting or hurtful
Oily containing or resembling oil, slippery or untrustworthy
Old aged or not new, having been in existence for a long time
Oldest superlative form of “old”, denoting the most aged or earliest
Omissible capable of being omitted or left out
Omissive omitting or leaving something out
Only exclusive, without any others or anything else
Oozy soft, slimy, and wet
Opportunist taking advantage of opportunities as they arise, regardless of morality or ethics
Opportunistic exploiting opportunities for personal gain or advantage
Opposite completely different, or positioned on the other side
Oppressive cruel, harsh, or unjustly controlling
Outcast a person who has been rejected by society or a social group
Outclassed inferior or surpassed by others in ability, skill, or quality
Outdated no longer current or applicable, old-fashioned
Outlawed prohibited by law, forbidden
Outmoded outdated or old-fashioned, no longer in fashion or popular
Outraged angered, offended or resentful
Outrageous shocking, exceeding all bounds of decency or reasonableness
Overactive excessively or overly active, hyperactive
Overaged too old for a particular activity or position
Overbearing domineering, overbearing or oppressive
Overburdened overloaded or overwhelmed with tasks or responsibilities
Owing unpaid, yet to be paid or settled

Personality Adjectives that Start with O

Below are 30 adjectives that start with O that describe a personality.

Adjective Meaning
Oafish Clumsy, boorish, and awkward in manners
Obedient Willing to obey or follow rules or instructions
Objective Impartial, based on facts and evidence rather than feelings
Obliging Willing to do favors or help others
Obnoxious Highly unpleasant or offensive in behavior, attitude, or taste
Obsessional Excessively preoccupied with a particular thing or idea
Obsessive Excessively preoccupied with a particular thing or idea
Obstinate Refusing to change one’s opinion or behavior
Officious Intrusively enthusiastic in offering help or advice
Opinionated Holding strongly to one’s own opinions
Optimistic Expecting positive outcomes and looking on the bright side
Organized Methodical and systematic in approach
Ostentatious Showy or pretentious in an attempt to impress
Outgoing Friendly and sociable, enjoying the company of others
Outraged Feeling very angry or indignant
Overachieving Working excessively hard to attain success or recognition
Overanxious Excessively worried or nervous
Overbearing Domineering and controlling in manner
Overconcerned Excessively worried or anxious about someone or something
Overcritical Excessively or unfairly critical
Overemotional Excessively emotional or sentimental
Overexcited Excessively or uncontrollably excited or enthusiastic
Overfocused Excessively or narrowly focused on one thing or goal
Overindulgent Excessively lenient or indulgent, often to the point of harm
Overjoyed Extremely happy or delighted
Overmodest Excessively humble or self-deprecating
Overprotective Excessively concerned and protective of someone or something
Overwhelmed Feeling overcome or inundated with emotions or responsibilities
Overwrought Overly agitated, excited, or emotional
Overzealous Excessively enthusiastic or fervent

Adjectives that Start with O to Describe a Person (not Personality)

Below are 50 adjectives that describe a person that start with O.

Adjective Meaning
Objectionable Unpleasant, offensive, or disagreeable
Obscene Offensive, indecent, or morally repulsive
Odd Different from what is usual or expected
Odious Hateful or highly offensive
Offensive Causing anger or resentment; insulting
OK Acceptable, satisfactory
Okay Acceptable, satisfactory
Old Having lived for a long time; not young
Older More advanced in age than someone else
Oldish Somewhat old
Open Willing to consider new ideas; transparent
Openhanded Generous or liberal in giving
Orderly Neatly and methodically arranged
Ordinary Normal or average
Outcast Rejected or ostracized from society or a group
Outclassed Inferior in comparison to someone else
Outdated No longer in fashion or current use
Outdoorsy Fond of outdoor activities
Outgoing Sociable or friendly; extroverted
Outlandish Bizarre or eccentric
Outlaw Unlawful or criminal; a fugitive from the law
Outmoded No longer in fashion or current use
Outrageous Shockingly bad or excessive; highly offensive
Outright Direct and straightforward; complete and total
Outspoken Frank and candid in expressing opinions
Outspread Extending over a wide area
Outstanding Exceptional; standing out from others
Overbooked Having too many appointments or commitments
Overburdened Overloaded with work, responsibilities, or problems
Overcharged Charged too much, or beyond the reasonable or fair price
Overcoached Overly trained or instructed, to the point of losing natural ability or creativity
Overcommitted Having too many commitments or obligations
Overcounted Counted or calculated excessively or inaccurately
Overdeveloped Excessively or artificially developed
Overdosed Having taken an excessive amount of a drug or medication
Overdressed Dressed too formally or elegantly for the occasion
Overeducated Having too much education or specialized knowledge
Overexerted Overly tired or exhausted from too much physical or mental effort
Overexerting Putting too much effort into something
Overexposed Too widely or frequently exposed to public view or attention
Overextended Overcommitted financially or in terms of time or resources
Overfatigued Extremely tired or exhausted
Overfed Given too much food or nourishment
Overfulfilled Having achieved more than what was required or expected
Overinformed Overloaded with information, often to the point of being overwhelmed
Overnighter A short trip or stay that lasts only one night
Oversteered Directed or controlled too much or too forcefully
Overweight Weighing more than is healthy or desirable
Overwhelming Intense, overpowering, or difficult to cope with

O Adjectives | Image

Adjectives that Start with O | List of 1000+ Adjectives Starting with OPin

List of Adjectives that Start with O

Adjectives that Start with Oa, Ob

  • Oafish
  • Oak
  • Oaken
  • Obdurant
  • Obdurate
  • Obedible
  • Obedient
  • Obediential
  • Obedt
  • Obeisant
  • Obeisaunt
  • Obese
  • Obfuscatory
  • Obituary
  • Object-based
  • Objectionable
  • Objectionable
  • Objectional
  • Objective
  • Objectless
  • Object-oriented
  • Objectual
  • Oblate
  • Oblationary
  • Obligate
  • Obligated
  • Obligational
  • Obligatory
  • Obliged
  • Obliging
  • Oblike
  • Oblimin
  • Oblique
  • Obliquid
  • Oblite
  • Obliterable
  • Obliterated
  • Obliterative
  • Oblivious
  • Oblong
  • Obnoxious
  • Obscene
  • Obscurant
  • Obscure
  • Obsequious
  • Observable
  • Observant
  • Observational
  • Observed
  • Observing
  • Obsessed
  • Obsessional
  • Obsessive
  • Obsignatory
  • Obsolescent
  • Obsolete
  • Obsoleter
  • Obstacle-ridden
  • Obstacular
  • Obstetric
  • Obstetrical
  • Obstetricious
  • Obstetrick
  • Obstinant
  • Obstinate
  • Obstreperous
  • Obstructed
  • Obstructive
  • Obstruent
  • Obtainable
  • Obtrusive
  • Obtuse
  • Obtuse-angled
  • Obverse
  • Obviating
  • Obvious

Adjectives that Start with Oc

  • Occasional
  • Occidental
  • Occipital
  • Occluded
  • Occlusal
  • Occluse
  • Occlusional
  • Occlusive
  • Occulent
  • Occulomotor
  • Occult
  • Occultic
  • Occultistic
  • Occultive
  • Occultural
  • Occupational
  • Occupiable
  • Occupied
  • Occurrent
  • Ocean-going
  • Oceanic
  • Oceanward
  • Ocellar
  • Ocellated
  • Ocher
  • Ochre
  • Ochreous
  • Ochrous
  • Ocreate
  • Octabasic
  • Octacore
  • Octacosanoic
  • Octacyclic
  • Octagonal
  • Octahedral
  • Octal
  • Octameric
  • Octangular
  • Octanoic
  • Octogenarian
  • Octogynous
  • Octoic
  • Octoid
  • Octolateral
  • Octolocular
  • Octonary
  • Octonionic
  • Octonocular
  • Octopaminergic
  • Octopartite
  • Octopean
  • Octopetalous
  • Octopian
  • Octopic
  • Octopine
  • Octoploid
  • Octopodal
  • Octopodous
  • Octopoid
  • Octopoidal
  • Octopolar
  • Octosyllabic
  • Octuple
  • Ocular

Adjectives that Start with Od

  • Odd
  • Oddish
  • Odds-on
  • Odd-toed
  • Odic
  • Odiferous
  • Odinic
  • Odious
  • Odobenine
  • Odometric
  • Odometrical
  • Odontoid
  • Odorant
  • Odoriferous
  • Odorless
  • Odorous
  • Odourful
  • Odourless

Adjectives that Start with Oe

  • Oecumenic
  • Oecumenical
  • Oedematous
  • Oedipal
  • Oenological
  • Oenophilic
  • Oestral
  • Oestrogenic
  • Oestrous

Adjectives that Start with Of

  • Off
  • Off-air
  • Off-base
  • Off-beam
  • Offbeat
  • Off-book
  • Off-broadway
  • Off-campus
  • Off-center
  • Off-colour
  • Offduty
  • Offenceless
  • Offended
  • Offending
  • Offensive
  • Off-field
  • Off-guard
  • Offhand
  • Off-hand
  • Official
  • Officiary
  • Officinal
  • Officious
  • Offish
  • Off-key
  • Off-kilter
  • Off-limits
  • Offline
  • Off-line
  • Off-peak
  • Off-piste
  • Off-put
  • Offputting
  • Off-putting
  • Off-road
  • Off-sale
  • Offscreen
  • Off-screen
  • Offshore
  • Offside
  • Offsides
  • Offsite
  • Off-site
  • Offstage
  • Off-street
  • Off-target
  • Off-the-ball
  • Off-the-cuff
  • Off-the-peg
  • Off-the-rack
  • Off-the-record
  • Off-the-shelf
  • Off-the-shoulder
  • Off-the-wall
  • Off-track
  • Off-white
  • Oft-repeated

Adjectives that Start with Og, Oh, Oi

  • Ogival
  • Ogreish
  • Ohmic
  • Oily

Adjectives that Start with Ok, Ol

  • Ok
  • Okay
  • Old
  • Olde
  • Olden
  • Older
  • Oldest
  • Oldfashioned
  • Old-fashioned
  • Old-growth
  • Old-hat
  • Oldish
  • Oldline
  • Old-line
  • Old-maidish
  • Old-school
  • Old-time
  • Old-world
  • Ole
  • Oleaceous
  • Oleaginous
  • Oleanolic
  • Olefinic
  • Oleic
  • Olent
  • Oleochemical
  • Oleographic
  • Oleophilic
  • Oleophobic
  • Oleoresinous
  • Oleose
  • Oleraceous
  • Olfactive
  • Olfactory
  • Oligaemic
  • Oligarchic
  • Oligarchical
  • Oligomeric
  • Oligopolistic
  • Oligosaline
  • Oligosemic
  • Oligosynaptic
  • Oligotrichous
  • Oligotrophic
  • Oliguric
  • Olivary
  • Olive
  • Olivelike
  • Olympian
  • Olympic

Adjectives that Start with Om

  • Omakase
  • Omani
  • Omasal
  • Ominous
  • Omissible
  • Omissive
  • Ommatidial
  • Omnibus
  • Omnipotent
  • Omnipresent
  • Omniscient
  • Omnivorous
  • Omohyoidean
  • Omophagic
  • Omophagous
  • Omosternal
  • Omotic
  • Omphacine
  • Omphacitic
  • Omphalic
  • Omphalinoid

Adjectives that Start with On

  • On
  • On-air
  • Onanistic
  • On-camera
  • On-campus
  • Once-removed
  • Oncogenetic
  • Oncogenic
  • Oncogenomic
  • Oncologic
  • Oncological
  • Oncoming
  • One
  • One-armed
  • One-day
  • One-eighth
  • One-eyed
  • One-fifth
  • One-fourth
  • One-gallused
  • One-half
  • One-handed
  • Oneiric
  • One-legged
  • One-ninth
  • One-note
  • One-off
  • One-on-one
  • One-piece
  • One-pot
  • One-quarter
  • Onerous
  • One-seventh
  • One-shot
  • Onesided
  • One-sided
  • One-sixth
  • One-stop
  • One-tenth
  • One-third
  • Onetime
  • One-time
  • One-to-one
  • One-touch
  • One-track
  • One-way
  • Ongoing
  • On-going
  • On-hand
  • Onioned
  • Onionless
  • Onionlike
  • Oniony
  • Oniric
  • Onirocritic
  • Onkus
  • Onlest
  • Onlie
  • Online
  • On-line
  • Onlooking
  • Only
  • On-off
  • Onomastic
  • Onomatopoeic
  • On-road
  • Onrushing
  • On-scene
  • Onscreen
  • On-screen
  • Onshore
  • Onside
  • Onsite
  • On-site
  • Onstage
  • On-stage
  • On-the-job
  • On-the-spot
  • Ontic
  • Ontogenetic
  • Ontologic
  • Ontological
  • Onward
  • Onygenaceous
  • Onymous
  • Onyx

Adjectives that Start with Oo, Op

  • Oo
  • Oob
  • Oofy
  • Oolitic
  • Oozy
  • Opacating
  • Opacifiable
  • Opacous
  • Opacular
  • Opalescent
  • Opaline
  • Opaque
  • Open
  • Openable
  • Open-air
  • Open-and-shut
  • Open-armed
  • Open-book
  • Opencast
  • Opencut
  • Opened
  • Open-ended
  • Open-eyed
  • Open-faced
  • Open-handed
  • Open-hearted
  • Open-hearth
  • Opening
  • Open-minded
  • Open-mouthed
  • Open-plan
  • Opensightly
  • Opensource
  • Opephoroid
  • Operable
  • Operant
  • Operatic
  • Operating
  • Operational
  • Operationalist
  • Operative
  • Opercular
  • Operculate
  • Operculated
  • Operose
  • Ophidian
  • Ophiolitic
  • Opiate
  • Opinionated
  • Oppilative
  • Opponent
  • Opportune
  • Opportunist
  • Opportunistic
  • Opposable
  • Opposed
  • Opposing
  • Opposite
  • Oppositional
  • Oppositive
  • Oppressed
  • Oppressional
  • Oppressive
  • Opprobrious
  • Opsonic
  • Optative
  • Opthalmic
  • Optic
  • Optical
  • Optimal
  • Optimific
  • Optimistic
  • Optimum
  • Optional
  • Optoelectronic
  • Optokinetic
  • Optomotor
  • Optospintronic
  • Optothermal
  • Optotypic
  • Optronic
  • Opulent
  • Opuntiaceous

Adjectives that Start with Or

  • Oracular
  • Oral
  • Orange
  • Orangey
  • Orangish
  • Orangy
  • Oratorial
  • Oratorian
  • Oratorical
  • Orbicular
  • Orbiculate
  • Orbital
  • Orbitary
  • Orbitual
  • Orbless
  • Orblike
  • Orchestral
  • Orchestrated
  • Orcish
  • Ordained
  • Ordeal
  • Orderable
  • Ordered
  • Orderly
  • Ordinal
  • Ordinary
  • Ordinate
  • Ordurous
  • Orectic
  • Oregonian
  • Organic
  • Organismal
  • Organismic
  • Orgasmic
  • Orgastic
  • Orgiastic
  • Orgulous
  • Orient
  • Oriental
  • Orientated
  • Orientating
  • Orientational
  • Oriented
  • Orienting
  • Origenian
  • Origenist
  • Origenistic
  • Originable
  • Original
  • Originary
  • Originative
  • Originless
  • Orinasal
  • Orinocan
  • Orkish
  • Ornamental
  • Ornate
  • Ornery
  • Ornithogenic
  • Ornithological
  • Ornithophilous
  • Orogastric
  • Orogenic
  • Orogenital
  • Orographic
  • Orographical
  • Orolabial
  • Orolingual
  • Orological
  • Oromucosal
  • Oronasal
  • Oroqen
  • Orosensory
  • Orosirian
  • Orotund
  • Orphaned
  • Orphic
  • Orthodontic
  • Orthodox
  • Orthoepic
  • Orthogenetic
  • Orthogenic
  • Orthognathic
  • Orthogonal
  • Orthograde
  • Orthologous
  • Orthometric
  • Orthopedic
  • Orthoptic
  • Orthorhombic
  • Orthostatic
  • Orthotopic
  • Orthotropic

Adjectives that Start with Os

  • Os
  • Oscillating
  • Oscillatory
  • Oscine
  • Oscitant
  • Osculating
  • Osculatory
  • Osmobiotic
  • Osmolar
  • Osmometric
  • Osmotic
  • Osseous
  • Ossicular
  • Ossiculate
  • Ossiferous
  • Ossified
  • Ossom
  • Os-specific
  • Osteal
  • Ostensible
  • Ostensive
  • Ostentatious
  • Osteoarthritic
  • Osteogenetic
  • Osteogenic
  • Osteoid
  • Osteopathic
  • Osteoporotic
  • Ostial
  • Ostrich-like

Adjectives that Start with Ot

  • Other
  • Otherwise
  • Other-worldly
  • Otic
  • Otoscopic
  • Ototoxic
  • Otterless
  • Otterlike
  • Otter

Adjectives that Start with Ou

  • Out
  • Out of work
  • Out-and-out
  • Outback
  • Outboard
  • Outbound
  • Outbred
  • Outcast
  • Outclassed
  • Outcoming
  • Outcut
  • Outdacious
  • Outdate
  • Outdated
  • Outdoor
  • Outdoorsy
  • Outer
  • Outermost
  • Outfitted
  • Outflowing
  • Outflung
  • Outgoing
  • Outgunned
  • Outjutting
  • Outland
  • Outlandish
  • Outlaw
  • Outlawed
  • Outlined
  • Outlying
  • Outmoded
  • Outmost
  • Out-of-body
  • Out-of-character
  • Out-of-context
  • Out-of-court
  • Out-of-date
  • Out-of-order
  • Out-of-pocket
  • Out-of-print
  • Out-of-service
  • Out-of-state
  • Out-of-town
  • Out-of-work
  • Outraged
  • Outrageous
  • Outright
  • Outshore
  • Outside
  • Outsize
  • Outsized
  • Outspoken
  • Outspread
  • Outstanding
  • Outward
  • Ouvrierist

Adjectives that Start with Ov

  • Oval
  • Ovaloid
  • Ovarian
  • Ovate
  • Ovation
  • Ovenproof
  • Oven-proof
  • Over
  • Overabundant
  • Overachiever
  • Overachieving
  • Overactive
  • Overage
  • Overaged
  • Overaggressive
  • Overalert
  • Overall
  • Overalled
  • Overanxious
  • Overapt
  • Overarm
  • Overattentive
  • Overawed
  • Overbanked
  • Overbearing
  • Overblown
  • Overbold
  • Overbooked
  • Overbreathed
  • Overburdened
  • Overbusy
  • Overcareful
  • Overcast
  • Overcautious
  • Overcharged
  • Overcivilized
  • Overclad
  • Overclaimed
  • Overclear
  • Overclose
  • Overclothed
  • Overcluttered
  • Overcoached
  • Overcoated
  • Overcoatless
  • Overcoming
  • Overcommitted
  • Overcomplicated
  • Overconcerned
  • Overconfident
  • Overconscientious
  • Overconscious
  • Overconsiderate
  • Overcounted
  • Overcritical
  • Overcurious
  • Overdamped
  • Overdelicate
  • Overdependent
  • Overdetermined
  • Overdeveloped
  • Overdocumented
  • Overdominant
  • Overdone
  • Overdoped
  • Overdosed
  • Overdramatic
  • Overdressed
  • Overdue
  • Overeager
  • Overeducated
  • Over-educated
  • Over-elaborate
  • Overemotional
  • Overemphatic
  • Overenthusiastic
  • Overexcitable
  • Overexcited
  • Overexerted
  • Overexerting
  • Overexposed
  • Overextended
  • Overfamiliar
  • Overfatigued
  • Overfed
  • Overflowing
  • Overfocused
  • Overfond
  • Over-fond
  • Overforceful
  • Overforested
  • Overforward
  • Overfragrant
  • Overfraught
  • Overfree
  • Overfreighted
  • Overfrequent
  • Overfriendly
  • Overfriezed
  • Overfruitful
  • Overful
  • Overfulfilled
  • Overfull
  • Overfurnished
  • Overfussy
  • Overgenerous
  • Overgreedy
  • Overgrown
  • Overhand
  • Overhanded
  • Overhasty
  • Overhead
  • Overheated
  • Overhyped
  • Overinclusive
  • Overindebted
  • Overintense
  • Overinvested
  • Overinvolved
  • Overionized
  • Overish
  • Overjealous
  • Overjittery
  • Overjoyed
  • Overjoyous
  • Overjubilant
  • Overjust
  • Overkeen
  • Overladen
  • Overland
  • Overlarge
  • Overlayered
  • Overloaded
  • Overlookable
  • Overlooked
  • Overly
  • Overlying
  • Overmastering
  • Overmighty
  • Overmodest
  • Overmotivated
  • Overmuch
  • Overmuscled
  • Overneat
  • Overnew
  • Overnice
  • Overnight
  • Overnighter
  • Overoptimistic
  • Overpessimistic
  • Overplayful
  • Over-polite
  • Overpriced
  • Overproof
  • Overproud
  • Overqualified
  • Overraced
  • Overracked
  • Overrank
  • Overrash
  • Over-rated
  • Overreaching
  • Overreactive
  • Over-reactive
  • Overread
  • Overready
  • Overrefined
  • Overriding
  • Overripe
  • Over-ripe
  • Oversea
  • Overseas
  • Oversensitive
  • Over-sensitive
  • Overserious
  • Oversewn
  • Oversexed
  • Overshot
  • Oversimplistic
  • Oversize
  • Oversized
  • Overslow
  • Oversmoothed
  • Oversnowed
  • Oversocialized
  • Oversoft
  • Oversolar
  • Oversolicitous
  • Oversophisticated
  • Oversparred
  • Overspecific
  • Overspeeding
  • Overstated
  • Oversteered
  • Overstimulated
  • Overstrung
  • Overstuffed
  • Oversubscribed
  • Oversuspicious
  • Overt
  • Over-the-counter
  • Over-the-top
  • Overtight
  • Overtired
  • Overtouristed
  • Overtroubled
  • Overtrusting
  • Overturnable
  • Overturned
  • Overuniform
  • Overvaliant
  • Overwater
  • Overweening
  • Overweight
  • Overwhelmed
  • Overwhelming
  • Overwrought
  • Overzealous
  • Over-zealous
  • Ovid
  • Oviform
  • Ovigerous
  • Oviparous
  • Ovular
  • Ovulational

Adjectives that Start with Ow, Ox

  • Ower
  • Owing
  • Owlish
  • Own
  • Owned
  • Ownerless
  • Oxalic
  • Oxblood
  • Oxeyed
  • Ox-eyed
  • Oxonian
  • Oxyacetic
  • Oxygenic
  • Oxyntic
  • Oxytocic

Adjectives that Start with Oy, Oz

  • Oyster
  • Oysterish
  • Oysterless
  • Oysterlike
  • Oystery
  • Ozone-friendly

Adjectives Starting with O | Image

Adjectives that Start with O | List of 1000+ Adjectives Starting with OPin

Adjectives that Start with O | List of 1000+ Adjectives Starting with OPin

Resources Related to Adjectives with O

Explore more A-Z adjectives