antonym

anti- + -onym

Pronunciation

• IPA ^(key): /ˈæntəˌnɪm/

• Audio (US)

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Noun

Singular antonym

Plural antonyms

1. (countable) A word that means the opposite of another word.
   • Antonym: synonym

   Good is the antonym of bad; high is the antonym of low.

   The words schadenfreude and epicaricacy are antonyms of confelicity.

Usage notes

• The word antonym is formal and used mostly in dictionaries. Most people say opposite in informal speech.