unimpregnable

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English

Etymology

un- +‎ impregnable

Adjective

unimpregnable (comparative more unimpregnable, superlative most unimpregnable)

  1. Not impregnable; capable of being pierced or assailed.
    • 1840, Pictures of the French, by J. Janin, Balzac, and other authors, page 180:
      Without being a coward, Jean's courage is not unimpregnable, and therefore plays he not the swaggerer amongst the patients.
  2. Incapable of being impregnated; impermeable or infertile.
    The compound rendered the surface of the vessel unimpregnable.
    Despite fertility treatment, one out of three women in the study remained unimpregnable.