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impervious
adjective as in unable to be penetrated
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On this page you'll find 59 synonyms, antonyms, and words related to impervious, such as: immune, impassable, impenetrable, inaccessible, invulnerable, and resistant.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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