/ Thesaurus / F Synonyms of first appearance Find synonyms for: Noun1. introduction, debut, first appearance, launching, unveiling, entry, beginning, start, commencementusage: the act of beginning something new; "they looked forward to the debut of their new product line"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language