/ Thesaurus / U Synonyms of unmapped Find synonyms for: Adjective1. chartless, uncharted, unmapped, unknown (vs. known)usage: (of unknown regions) not yet surveyed or investigated; "uncharted seas"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language