Prefix and Suffix

De Prefix: Meaning and Examples of the Prefix De

De prefix in English. Affixes are additional elements placed either at the beginning or end of a root word to change its meaning. There are two types of affixes: prefixes and suffixes. A prefix is added at the beginning of the term, while a suffix is employed at the end. Both could change the meaning of the root word based on the definition signified by that specific prefix or suffix. Here in this article, we shall discuss one particular prefix: de prefix.

De Prefix

What is the Prefix De?

The de- prefix is generally used to undo a specific action. Thus, it is most commonly applied before a verb or action word. However, the de- prefix has evolved into having several meanings over time. More specifically, it can indicate privation, removal, separation, and intensity of a word. It can also imply something done thoroughly or something that is taken negatively. Additionally, it may suggest disapproval.

Nevertheless, not all words starting with de- are using it as a prefix. For example, “deaf” is not “de-af,” and “dentist” is not “de-ntist.” Deaf and dentist are complete, stand-alone words. The de- in each of them is not a prefix but rather an innate part of the terms.

A list of words with de- prefixes is provided in the latter part of this article to help illustrate how de- is used in various meanings.

Origin of De prefix

Before diving into the whole set of examples of words with de- prefixes, let us first learn how and where this prefix came from. The de- prefix is inherited from French and Latin languages. When translated, it means “down,” “off,” or “away.” It is an active prefix, meaning it is continually used and added to different words to form new ones.

Examples of Words with De Prefix

Without further ado, here are some examples of terms that use the de-prefix. They are categorized based on the meaning that the de- implies on the word.

Meaning: to undo an action

  • deactivate
  • defrost
  • dehumidify
  • decontaminate
  • deconstruct
  • detoxify
  • dehydrate
  • decolonize
  • declassify
  • decolorize
  • deforestation
  • deflate
  • declutter
  • decentralize
  • demilitarize

Meaning: to go down or make less

  • descend
  • depress/depression
  • degrade/degradation
  • depreciate/depreciation
  • decrease
  • decline
  • decelerate/deceleration
  • degenerate/degeneration/degenerative
  • deficit
  • deplete
  • devolve
  • demote
  • deject
  • devaluate
  • deteriorate

Meaning: to take or move away

  • deprive
  • deduct
  • denude
  • delete
  • debone
  • debug
  • debark
  • defuse
  • detract
  • depart
  • deport
  • derail
  • detach
  • deflect
  • de-stress

Meaning: to postpone or hold back

  • delay
  • defer
  • detain
  • desist

Meaning: to imply something negative

  • destruct
  • defame
  • deceive
  • delude
  • detest
  • devastate

Meaning: to disapprove of something or inform against

  • debate
  • deprecate
  • deplore
  • denounce

Those are just some of the terms that use the de- prefix. Hopefully, this article helps in improving your vocabulary about different words with suffixes. Check out the other articles on this website to learn more about English grammar.

De Prefix | Infographic

De prefix | Definition and Examples of De-prefix in The English LanguagePin

B1 Knowledge Check · 5 questions

De Prefix Practice Quiz (B1-B2)

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Q1

Question 1: What does the word 'deactivate' mean?

Question 1 options
'Deactivate' means to make something stop working or switch it off. The prefix 'de-' reverses the action of 'activate', meaning to turn on or make active.
Q2

Question 2: Which word is closest in meaning to 'deteriorate'?

Question 2 options
'Decline' is closest in meaning to 'deteriorate' because both describe getting worse over time. 'Deprive' means to take something away, 'deflate' means to let air out, and 'detach' means to separate — none of these describe a gradual worsening.
Q3

Question 3: A: 'Why was the manager so upset with the new employee?' B: 'Because she spread false rumours about him and tried to ___ his reputation in front of the whole team.'

Question 3 options
'Defame' means to damage someone's reputation by saying false things about them, which fits the context of spreading false rumours. 'Deceive' means to trick someone, 'deprive' means to take something away, and 'delude' means to cause someone to believe something untrue about themselves.
Q4

Question 4: The new traffic system is designed to ___ the flow of vehicles through the city centre during peak hours.

Question 4 options
'Decentralise' is the most natural and precise choice here because it means to distribute control or flow away from one central point, which fits the context of managing traffic. 'Decelerate' means to slow down, 'deflect' means to redirect, and 'devolve' means to pass power to a lower authority — none of these describe managing traffic flow as precisely.
Q5

Question 5: The word 'depreciate' is commonly used in formal and financial contexts to describe a decrease in the value of something over time.

Question 5 options
True. 'Depreciate' is a formal financial term that describes the reduction in value of an asset over time. It collocates with words like 'currency', 'property', and 'equipment' in professional and financial writing.

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