Helpless and Impregnable

Helpless

Helpless adjective - Lacking protection from danger or resistance against attack.
Usage example: after the storm we found a helpless baby bird that had fallen out of its nest

Impregnable is an antonym for helpless.

Nearby Words: help, helpful, helplessness, helplessly

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

Helpless is an antonym for impregnable.

Cite this Source
Impregnable and Helpless. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/helpless/impregnable
Helpless & Impregnable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/helpless/impregnable>.
Impregnable or Helpless. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/helpless/impregnable.
Google Ngram Viewer shows how "helpless" and "impregnable" have occurred on timeline