/ Thesaurus / C Synonyms of cul Find synonyms for: Noun1. cul, cul de sac, dead end, passageusage: a passage with access only at one endWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: garrulous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language