EXON Antonyms There are 2 antonyms of the word exon. (opposite meanings)Did you mean?Definition of EXONAlso try opposite words for..exonsexonerateexoneratesexoneratedexoneratingBest Opposite Words For EXONTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1intronsnounn2intronnounn