Type a word to see its opposites. Direct antonyms come first, followed by near antonyms (opposites of its synonyms) and opposites formed with prefixes like un-, in- or dis-. Hover a word for its definition and click to copy it.
Hover or tap a word to see its definition. Click to copy it; press → to find its opposites.
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How to use the Antonym Finder
Type a word, for example happy, increase or generous, and press Find antonyms.
Read the groups: direct antonyms are the strongest opposites, near antonyms are related opposites, and prefix opposites are formed from the word itself.
Hover or tap a word to see its definition and make sure it fits your sentence.
Click a word to copy it, or use Copy all shown. Press the arrow to look up that word's opposites.
Types of antonyms
Type
What it means
Examples
Complementary
No middle ground: if one is true, the other is false.
The most common prefix, mostly with adjectives and verbs
unkind, unlikely, unlock
in-
Mostly with words of Latin origin
incorrect, inactive, invisible
im-
Before b, m and p
impossible, imbalance, immature
il-
Before l
illegal, illogical, illiterate
ir-
Before r
irregular, irrelevant, irresponsible
dis-
With verbs, nouns and adjectives
disagree, dishonest, disadvantage
non-
Neutral "not", often in technical words
nonfiction, nonstop, nonprofit
Watch out for false negatives: inflammable means the same as flammable, and invaluable means extremely valuable, not worthless.
Common antonym pairs
Word
Antonym
Word
Antonym
increase
decrease
accept
reject
ancient
modern
brave
cowardly
generous
stingy
temporary
permanent
expand
contract
optimist
pessimist
maximum
minimum
include
exclude
Looking for words with the same meaning instead? Use the Synonym Finder.
Frequently asked questions
What is an antonym?
An antonym is a word with the opposite meaning of another word, such as hot and cold, increase and decrease, or happy and sad. Many words have more than one antonym because they have more than one meaning.
What is the difference between direct and near antonyms?
Direct antonyms are recorded as opposites in the WordNet dictionary, for example good and bad. Near antonyms are found indirectly: they are opposites of the word's synonyms (glad → sad) or synonyms of its direct opposites (sad → unhappy, sorrowful). They are useful but should be checked in context.
What are the types of antonyms?
Linguists distinguish complementary antonyms with no middle ground (alive / dead), gradable antonyms on a scale (hot / warm / cool / cold) and relational antonyms that describe a relationship from two sides (buy / sell, teacher / student).
How are prefix antonyms made?
Many English opposites are formed with a negative prefix: un- (unhappy), in- (incorrect), im- before b, m and p (impossible), il- before l (illegal), ir- before r (irregular), dis- (dislike) and non- (nonfiction). The tool only lists forms that appear in its English word list, and also removes a prefix (unkind → kind) and swaps -ful and -less (careful → careless).
Why are there no antonyms for some words?
Nouns for concrete things, such as table or banana, usually have no true opposite. Try the adjective or verb form of the word, or a word with a clear scale of meaning. Misspelled words show did-you-mean suggestions.
Where does the data come from?
Direct and near antonyms come from the free Datamuse API, which is based on WordNet. Prefix opposites are checked in your browser against an English word list. Only the word you search is sent to the API.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.