BUTANES Antonyms There are 9 antonyms of the word butanes. (opposite meanings)Did you mean?Definition of BUTANESBest Opposite Words For BUTANESTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1ethanenoun, adjectiven, adj2heptanenounn3hexanenounn4methanenoun, adjectiven, adj5octaneverb, noun, adjectivev, n, adj6propanenounn7decanenounn8nonanenounn9pentanenounn Alternatives for OCTANE Words (3)fuelgasolinepetrolOpposite words for octane Alternatives for PROPANE Words (1)propellantOpposite words for propane