bust one's ass

== English == === Alternative forms === bust one's arse === Verb === bust one's ass (third-person singular simple present busts one's ass, present participle busting one's ass, simple past and past participle busted one's ass or bust one's ass) (slang, vulgar, Canada, US) To work very hard, to put in a great amount of effort. Synonyms: bust one's butt, bust one's chops ==== Translations ==== === See also ===