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impenetrableness
The quality of being impenetrable.
The state of being impervious
penetrability
The extent to which something is penetrable
Find another word for impenetrability. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for impenetrability, like: impenetrableness, imperviousness, penetrability, solidity, changeability and elusiveness.
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