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impermeably Synonyms

Another word for impermeably

Choosing another word for impermeably that fits your sentence is easier when synonyms and similar words are paired with an exact adverb definition and ranked by match strength.
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• adverb (Context 1)

In a manner that does not allow fluids, gases, or other substances to pass through.

Usage Example

"The underground storage tank was imperviously sealed with a heavy synthetic liner to prevent groundwater contamination."

Strongest
imperviously
Strong
impenetrably
hermetically

Opposites of impermeably

The opposite of impermeably shifts depending on context. Common opposites include:

permeably
porously
perviously
See all opposites of impermeably

• Nearby Words

impermanent
impermanently
impermeable
impermeably
impermissible
impersonal
impersonally

Cite this Entry

Wordmom. (2026). Synonyms for Impermeably. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/impermeably
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