Antonyms are words that have contrasting, or opposite, meanings. Like so much of the English language, “antonym” is rooted in the Greek language. The Greek word anti means opposite, while onym means name. Opposite name – that makes sense!

Does antonym mean the opposite?

: a word of opposite meaning The usual antonym of good is bad.

Are antonyms in a dictionary?

An antonym is a word that has the opposite meaning of another word. For example, the word small means of limited size, while big means of large size. Happy, a feeling of gladness, is an antonym of sad, a feeling of sorrow. Nouns, verbs, adjectives, and adverbs can all have antonyms, though not all do.