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impervious

1 ENTRIES FOUND:
impervious /ɪmˈpɚvijəs/ adjective
impervious
/ɪmˈpɚvijəs/
adjective
Britannica Dictionary definition of IMPERVIOUS
[more impervious; most impervious]
technical : not allowing something (such as water or light) to enter or pass through usually + to
formal : not bothered or affected by something usually + to

— imperviousness

noun [noncount]