/ Thesaurus / P Synonyms of partner in crime Find synonyms for: Noun1. confederate, collaborator, henchman, partner in crime, accessory, accessaryusage: someone who assists in a plotWordNet 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