BASALTIC Antonyms There are 4 antonyms of the word basaltic. (opposite meanings)Did you mean?Definition of BASALTICSynonyms of BASALTICAlso try opposite words for..basaltBest Opposite Words For BASALTICTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1extrusiveadjectiveadj2igneousadjectiveadj3volcanicadjectiveadj4maficnoun, adjectiven, adj Alternatives for EXTRUSIVE Words (1)effusiveOpposite words for extrusive Alternatives for IGNEOUS Words (11)eruptivefierycrystallinegraniticmoltenplutonicrockyscoriavolcanicpyrogenicpyrogenousOpposite words for igneous Alternatives for VOLCANIC Words (5)activeeruptivefieryigneouspyroclasticOpposite words for volcanic Alternatives for MAFIC Words (1)basicOpposite words for mafic