/ Thesaurus / O Synonyms of off your guard Find synonyms for: Adjective1. napping, off-guard(prenominal), off guard(predicate), off one's guard(predicate), off his guard, off her guard, off your guard, unready (vs. ready)usage: not prepared or vigilant; "the blow caught him napping"; "caught in an off-guard moment"; "found him off his guard"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language