Antonym definition: a word opposite in meaning to another. Fast is an antonym of slow.. See examples of ANTONYM used in a sentence. EnglishClub : Learn English : Vocabulary : Reference : Synonyms / Antonyms Synonyms and Antonyms Synonym A synonym is a word that means exactly the same as, or very nearly the same as, another word in the same language. For example, "close" is a synonym of "shut". Definition of Antonym Antonym derives from the word antonymy, a precise grammar term describing words with conflicting meanings. Words with opposing meanings are known as antonyms. An antonym of night, for example, is the day, while an antonym of off is on. Antonyms are words with opposite meanings, such as good and bad. Learn about graded and complementary antonyms, how to form antonyms with prefixes, and why antonyms are important for writing and vocabulary.
