/ Thesaurus / I Synonyms of impregnably Find synonyms for: Adverb1. impregnablyusage: in an impregnable manner; "the sight of that bland, impregnably righteous face has been enough to make their blood run cold"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language