LekhoriLekhoriNot penetrable.
The fortress is impenetrable, so it cannot be taken.
Opaque; obscure; not translucent or transparent.
When night falls, she cloaks the world in impenetrable darkness.
Incomprehensible; fathomless; inscrutable.
Business jargon makes this document impenetrable—I can’t understand it.
A person not openly given to friendship.
I should lose the reputation that I am gradually acquiring among our impenetrables here, were I to confess the excitement which I felt at the idea of entering his house—the house of that great general under whose command you made your first charge.
From Middle English inpenetrabel, inpenetrabyle, from Middle French impenetrable or directly from its etymon, Latin impenetrābilis. By surface analysis, im- + penetrable.
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