adjective
EXAMPLES FROM CORPUS
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But even this normally impervious mucus is easily breached by ethanol.
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How could I have been so thick-headed, I wonder now, so impervious ?
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Indeed, some individuals are quite impervious to cultural incentives, or even take pleasure in flouting them.
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She was amazed at how little he wore and how impervious he was to the cold.
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The evening air had its accustomed November nip, but the groups making their way from Celtic Crescent were impervious to it.
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The trees everywhere over-grow the road, so that it is totally impervious to the sun, except at a few places.
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Was it possible for anyone to be so impervious to the things he saw?