ANIONS Antonyms There are 2 antonyms of the word anions. (opposite meanings)Did you mean?Definition of ANIONSAlso try opposite words for..anionanionicBest Opposite Words For ANIONSTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1cationicadjectiveadj2cationsnounn Alternatives for CATIONIC Words (3)amphotericchargedpositiveOpposite words for cationic