antonym

noun an·to·nym \ ˈan-tə-ˌnim \

Definition of antonym

: a word of opposite meaning

The usual antonym of good is bad.

—

antonymic

play \ˌan-tə-ˈni-mik\ adjective

—

antonymous

play \an-ˈtä-nə-məs\ adjective

—

antonymy

play \-mē\ noun

See antonym defined for English-language learners

See antonym defined for kids

Examples of antonym in a Sentence

“Hot” and “cold” are antonyms.

Recent Examples of antonym from the Web

And still the signs fluttered and scattered, the book of antonyms ripped up by Sanders delegates, who tore at its pages and yanked at its binding, its brittle glue.

— jill lepore, The New Yorker, "A Tale of Two Conventions," 29 July 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antonym.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Some differences between synonyms and antonyms

The English language (and, we may presume, many other languages) has both antonyms and synonyms. There are many more words with synonyms than there are words with antonyms, since many things exist which do not have an opposite (the word sandwich, for instance, may be said to have synonyms in the words hoagie, grinder, submarine, and many other words, but there is no opposite of sandwich). Antonym is also a much more recent addition to English than synonym is; it first appeared in the 1860s, whereas synonym has been used for more than 500 years. Additionally, both nouns have adjectival forms: synonymous and antonymous. Synonymous, which is often used loosely ("She has become synonymous with good taste"), is the more common of the two.