/ Thesaurus / S Synonyms of sniff out Find synonyms for: Verb1. sniff out, scent out, smell out, nose outusage: recognize or detect by or as if by smelling; "He can smell out trouble"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language