Thesaurus
impervious
adjective
Synonyms and Antonyms of IMPERVIOUS
1
not allowing penetration (as by gas, liquid, or light) <the material for this coat is supposed to be impervious to rain>
Related Words close, compact, dense, snug, thick; airtight, hermetic (also hermetical), leakproof, watertight; lightproof, soundproof, waterproof
2
impossible to get through or into <the rain forest is impervious to all but the most dedicated explorers>
Related Words close, compact, dense, thick, tight; compressed, condensed; sturdy, substantial, tough; firm, frozen, hard, solid, stiff; inflexible, rigid, unbending, unyielding
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