/ Thesaurus / T Synonyms of thievishly Find synonyms for: Adverb1. thievishlyusage: in a manner characteristic of a thiefWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language