PROPYL Antonyms There are 6 antonyms of the word propyl. (opposite meanings)Did you mean?Definition of PROPYLAlso try opposite words for..propylsBest Opposite Words For PROPYLTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1butylnounn2ethyladjectiveadj3methylnoun, adjectiven, adj4hexylnoun, adjectiven, adj5nonylnounn6octyladverb, noun, adjectiveadv, n, adj Alternatives for ETHYL Words (9)alcoholbutylethanolmethanolhexylnonyloctylpentyletPhrases (2)ethyl groupethyl radicalAbbreviations (1)eOpposite words for ethyl