Impervious
"Impervious" in ca
immune
(unaffected or unable to be affected by something)
immune
(immune to damage or effect)
impenetrable
(preventative of any penetration; impenetrable, impermeable)
impermeable
(preventative of any penetration; impenetrable, impermeable)
invulnerable
(immune to damage or effect)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.