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
Invulnerable
Invulnerable adjective - Incapable of being defeated, overcome, or subdued.
Usage example: typically teenagers suppose themselves to be invulnerable, so they take needless risks
Helpless is an antonym for invulnerable.
Nearby Word: invulnerability
Both words in one sentence
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The easiest way to render her helpless is to hit her with so much power that she is forced to dump everything into armor, rendering her Nigh Invulnerable but barely superhuman in every other way.
Source: Achilles' Heel -
In order to get rid of him, Data beams his evil brother into outer space, where the Nigh Invulnerable android will be cursed to drift around aimlessly in the endless vacuum, completely helpless.
Cite this Source
Invulnerable and Helpless. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/helpless/invulnerable
Helpless & Invulnerable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/helpless/invulnerable>.
Invulnerable or Helpless. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/helpless/invulnerable.
Google Ngram Viewer shows how "helpless" and "invulnerable" have occurred on timeline