/ Thesaurus / R Synonyms of republic of korea Find synonyms for: Noun1. South Korea, Republic of Koreausage: a republic in the southern half of the Korean Peninsula; established in 1948WordNet 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