ANAPSID Antonyms There are 2 antonyms of the word anapsid. (opposite meanings)Did you mean?Definition of ANAPSIDSynonyms of ANAPSIDBest Opposite Words For ANAPSIDTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb Expand?WordSave?Synonyms..UsageTypediapsidadjectiveadjnoun • reptile having a pair of openings in the skull behind each eyesynapsidnounnnoun • extinct reptile having a single pair of lateral temporal openings in the skull