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Impervious

usgb/ɪmˈpɜːrviəs/Volume
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Literal BarrierPlay
Used when something physically stops another substance from passing through. SlideThe gloves were impervious to the chemicals.
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Technical ContextPlay
Often found in descriptions of materials in science, construction, or technology. SlideThey used an impervious membrane beneath the road.
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Nature ProofPlay
Suggests resistance to natural elements like water, heat, and humidity. SlideOur tent is impervious to rain.