ETHYL Antonyms There are 7 antonyms of the word ethyl. (opposite meanings)Did you mean?Definition of ETHYLSynonyms of ETHYLAlso try opposite words for..ethylenesethylationBest Opposite Words For ETHYLTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1butylnounn2methylnoun, adjectiven, adj3propylnounn4hexylnoun, adjectiven, adj5nonylnounn6octyladverb, noun, adjectiveadv, n, adj7pentylnoun, adjectiven, adj Alternatives for PENTYL Words (1)amylOpposite words for pentyl