Adjectives that Start with O (O Adjectives in English) • 7ESL

Contents

Discover a huge list of adjectives that start with O in English with meanings and examples. This reference will help you describe different things like personalities, behaviors, appearances, and qualities.

Learning these adjectives can expand your English vocabulary and improve your language skills. Dive into categories such as descriptive, positive, negative, and personality adjectives, along with images to aid your learning experience.

Adjectives that Start with O

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

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

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.

O Adjectives | Image

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

List of Adjectives that Start with O – Created by 7ESL

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Emma Grace

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