impregnable

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[edit] English

[edit] Etymology

Ultimately from im- "not", French prendre "to take", and -able "able to be __-ed".

[edit] Adjective

impregnable (comparative more impregnable, superlative most impregnable)

Positive
impregnable

Comparative
more impregnable

Superlative
most impregnable
  1. (Of a fortress, wall, etc.) Too strong to be penetrated.
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