/ Thesaurus / R Synonyms of rigil Find synonyms for: Noun1. Alpha Centauri, Rigil Kent, Rigilusage: brightest star in Centaurus; second nearest star to the sunWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language