Pronunciation IPA (key): /nɪm/ Suffix Suffix-onym Used to form nouns referring to types of words based on their meaning relationships, such as similarity, oppositeness, or origin. A synonym is a word with a similar meaning to another. (syn- + onym) An antonym is a word with the opposite meaning of another. (anti- + onym) Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads