/ Thesaurus / B Synonyms of banzai attack Find synonyms for: Noun1. banzai attack, banzai charge, attack, onslaught, onset, onrushusage: a mass attack of troops without concern for casualties; originated by Japanese who accompanied it with yells of `banzai'WordNet 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