/ Thesaurus / B Synonyms of birthday party Find synonyms for: Noun1. birthday party, partyusage: a party held on the anniversary of someone's birthWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language