Found 2 items, similar to impregnably.
English → English (WordNet) Definition: impregnably impregnably adv : in an impregnable manner; “the sight of that bland, impregnably righteous face has been enough to make their blood run cold”
English → English (gcide) Definition: Impregnably Impregnable \Im*preg"na*ble\, a. [F. imprenable; pref. im- not + prenable pregnable, fr. prendre to take, L. prehendere. See Comprehend, Get to obtain.] Not to be stormed, or taken by assault; incapable of being subdued; able to resist attack; unconquerable; as, an impregnable fortress; impregnable virtue. [1913 Webster] The man's affection remains wholly unconcerned and impregnable. --South. -- Im*preg"na*ble*ness, n. -- Im*preg"na*bly, adv. [1913 Webster]