Impregnable and Powerless

Impregnable

Impregnable adjective - Incapable of being defeated, overcome, or subdued.
Usage example: an impregnable fortress that had foiled one invader after another over the centuries

Powerless is an antonym for impregnable.

Powerless

Powerless adjective - Unable to act or achieve one's purpose.

Impregnable is an antonym for powerless.

Nearby Words: power, powerful, powerfully
Cite this Source
Powerless and Impregnable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impregnable/powerless
Impregnable & Powerless. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impregnable/powerless>.
Powerless or Impregnable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impregnable/powerless.
Google Ngram Viewer shows how "impregnable" and "powerless" have occurred on timeline