Unimpregnable
"Unimpregnable" in a Sentence (3 examples)
Without being a coward, Jean's courage is not unimpregnable, and therefore plays he not the swaggerer amongst the patients.
The compound rendered the surface of the vessel unimpregnable.
Despite fertility treatment, one out of three women in the study remained unimpregnable.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.