DIAPSID Antonyms There are 2 antonyms of the word diapsid. (opposite meanings)Did you mean?Definition of DIAPSIDBest Opposite Words For DIAPSIDTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1synapsidnounn2anapsidnoun, adjectiven, adj Alternatives for ANAPSID Words (1)reptilePhrases (1)anapsid reptileOpposite words for anapsid