/ Thesaurus / S Synonyms of sleep off Find synonyms for: Verb1. sleep off, loseusage: get rid of by sleeping; "sleep off a hangover"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language