/ Thesaurus / U Synonyms of unidentified Find synonyms for: Adjective1. unidentified, unknown (vs. known)usage: not yet identified; "an unidentified species"; "an unidentified witness"2. nameless, unidentified, unknown, unnamed, anonymous (vs. onymous), anon.usage: being or having an unknown or unnamed source; "a poem by an unknown author"; "corporations responsible to nameless owners"; "an unnamed donor"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language