/ Thesaurus / C Synonyms of copper's nark Find synonyms for: Noun1. nark, copper's nark, informer, betrayer, rat, squealer, blabberusage: an informer or spy working for the policeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language