ASTOMATAL Antonyms There are 2 antonyms of the word astomatal. (opposite meanings)Did you mean?Definition of ASTOMATALBest Opposite Words For ASTOMATALTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1stomataladjectiveadj2stomatousadjectiveadj Alternatives for STOMATAL Words (2)stomatousstomaticOpposite words for stomatal Alternatives for STOMATOUS Words (1)stomatalOpposite words for stomatous