Find Antonyms
impermeably Antonyms
Opposite of impermeably
Pinning down the opposite of impermeably requires matching its exact sense, so the antonyms and opposite words below are paired with a clear adverb definition and ranked by contrast strength.
• 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 permeably sealed with a heavy synthetic liner to prevent groundwater contamination."
Strongest
permeably
porously
Strong
perviously
Similar words to impermeably
Words similar to impermeably shift depending on context. Common synonyms include:
imperviously
impenetrably
hermetically
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Impermeably. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/impermeably