/ Thesaurus / C Synonyms of correctional institution Find synonyms for: Noun1. correctional institution, penal institution, penal facilityusage: a penal institution maintained by the governmentWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language