/ Thesaurus / S Synonyms of set on fire Find synonyms for: Verb1. set ablaze, set aflame, set on fire, set afire, burn, combustusage: set fire to; cause to start burning; "Lightening set fire to the forest"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language