Synonyms for combust Found 19 synonyms across 3 meanings for “combust”. cause to burn or combust (verb) burn start to burn or burst into flames (verb) eruptigniteconflagrate get very angry and fly into a rage (verb) Explore Related Words Rhymes with combustSynonyms for burnSynonyms for eruptSynonyms for igniteSynonyms for conflagrate Synonym Finder | Rhyme Finder | Poetry Editor