/ Thesaurus / Q Synonyms of quin Find synonyms for: Noun1. quintuplet, quint, quin, sibling, sibusage: one of five children born at the same time from the same pregnancyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language