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Definition of imperviousness

imperviousness

/ɪmˈpɝːviəsnəs/
im · per · vi · ous · ness
Adverb:imperviously
•
Adjective:impervious
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imperviousness Lexical Profile

imperviousness Game Scores & Validity

• noun

1

The state or quality of being unaffected, unmoved, or uninfluenced by external arguments, criticism, or emotions.

Example

"Her complete imperviousness to public criticism allowed her to pursue controversial reforms without hesitation."

2

The physical quality of not allowing fluid, gas, or other substances to pass through or penetrate.

Example

"Engineers tested the clay liner to verify its imperviousness to groundwater seepage."

Synonyms
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Antonyms
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• Rhymes for imperviousness

• Nearby Words

impertinence
impertinent
impertinently
imperviousness
impetuous
impetuously
impetuousness

Word Origin & Etymology

Formed in English from the adjective 'impervious' plus the native noun suffix '-ness'. 'Impervious' derives from Latin 'impervius' ('impassable'), composed of 'in-' ('not'), 'per' ('through'), and 'via' ('way' or 'road').

Cite this Entry

Wordmom. (2026). Definition of Imperviousness. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/imperviousness
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