inexpugnable Meaning, Definition & Usage

  1. adjective satellite incapable of being overcome, challenged or refuted
    impregnable.
    • an impregnable argument
    • impregnable self-confidence

WordNet

In`ex*pug"na*ble adjective
Etymology
L. inexpugnabilis: cf. F. inexpugnable. See In- not, and Expugnable.
Definitions
  1. Incapable of being subdued by force; impregnable; unconquerable. Burke.
    A fortress, inexpugnable by the arts of war. Milman.

Webster 1913