/ Thesaurus / P Synonyms of proper noun Find synonyms for: Noun1. proper noun, proper name, nounusage: a noun that denotes a particular thing; usually capitalizedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language