/ Thesaurus / U Synonyms of unsleeping Find synonyms for: Adjective1. unsleeping, wide-awake, awake(predicate) (vs. asleep)usage: fully awake; "the unsleeping city"; "so excited she was wide-awake all night"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language