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impregnable

Synonyms and Antonyms of impregnable

1 incapable of being defeated, overcome, or subdued

  • an impregnable fortress that had foiled one invader after another over the centuries
Synonyms of impregnable
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Antonyms of impregnable

2 impossible to get through or into

  • the castle's supposedly impregnable walls
Synonyms of impregnable
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Antonyms of impregnable



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