/ Thesaurus / B Synonyms of big bang Find synonyms for: Noun1. big bang, explosion, detonation, blowupusage: (cosmology) the cosmic explosion that is hypothesized to have marked the origin of the universeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language