adj.

1. Incapable of being penetrated: a material impervious to water.
2. Incapable of being affected: impervious to fear.

[From Latin impervius : in-, not; see in–¹ + pervius, pervious; see pervious.]

imperviously im·per'vi·ous·ly adv.
imperviousness im·per'vi·ous·ness n.

adjective

Having the capacity to withstand: immune, insusceptible, proof, resistant, resistive, unsusceptible. See resist/yield.

adj

Definition: unable to be penetrated
Antonyms: exposed, open, penetrable, permeable, responsive, sensitive, vulnerable

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In ceramics, that degree of vitrification evidenced visually by complete resistance to dye penetration; generally signifies zero absorption of water, except for floor and wall tile, which may absorb up to 0.5% water.

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IN BRIEF: Not allowing to pass through.

Fear comes from uncertainty. When we are absolutely certain, whether of our worth or worthlessness, we are almost impervious to fear. Thus a feeling of utter unworthiness can be a source of courage. — Eric Hoffer (1902-1983), American writer and philosopher.

Dansk (Danish)
adj. - uigennemtrængelig, uimodtagelig, upåvirkelig, modstandsdygtig

Nederlands (Dutch)
ondoordringbaar, onontvankelijk, ongevoelig

Français (French)
adj. - imperméable, (fig) indifférent, imperméable (à)

Deutsch (German)
adj. - undurchlässig, unzugänglich

Ελληνική (Greek)
adj. - αδιαπέραστος, στεγανός, ανεπηρέαστος (από)

Italiano (Italian)
impenetrabile

Português (Portuguese)
adj. - impenetrável

Русский (Russian)
непроницаемый, невосприимчивый

Español (Spanish)
adj. - insensible, impenetrable

Svenska (Swedish)
adj. - ogenomtränglig, otillgänglig, oemottaglig, okänslig

中文（简体） (Chinese (Simplified))
透不过的, 无动于衷的, 不渗透的

中文（繁體） (Chinese (Traditional))
adj. - 透不過的, 無動於衷的, 不滲透的

한국어 (Korean)
adj. - 통하지 않는, 무감각한

日本語 (Japanese)
adj. - 通さない, 動じない

العربيه (Arabic)
‏(صفه) غير منفذ للماء‏

עברית (Hebrew)
adj. - ‮לא מתרשם מטיעונים, אטים, לא חדיר, אטום להשפעה חיצונית‬

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