impervious

Adjective
US[im-pur-vee-uhs]/ˌɪmˈpɝviəs/4 syllables
Synonyms: imperviable

Open English WordNet

Adjective (1)

  1. not admitting of passage or capable of being affected“a material impervious to water”“someone impervious to argument”Synonyms: imperviableSimilar soundproof, resistant, runproof, greaseproof, proof, corrosion-resistant, rot-resistant, colorfast +3 moreSee also impermeable
Word of the day · Sep 29About this word
haphazardadjective

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Webster's Dictionary (1913)

Im·per′vi·ous adjective

Origin: L. impervius; pref. im- not + per through + via way. See Voyage.

Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air.

This gulf impassable, impervious.— John Milton
The minds of these zealots were absolutely impervious.— Thomas Babington Macaulay

Synonyms: Impassable; pathless; impenetrable; imperviable; impermeable.

— Im·per′wb-a1′>′vi·ous·ly, adverb — Im·per′wb-a1′>′vi·ous·ness, noun

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54

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