/ Thesaurus / U Synonyms of unimpressionable Find synonyms for: Adjective1. unimpressionable (vs. impressionable)usage: not sensitive or susceptible to impression; "an unimpressionable mind"WordNet 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