Find Antonyms

porousness Antonyms

Opposite of porousness

Because the opposite of porousness shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• noun (Context 1)

The quality or state of having minute spaces or holes through which liquid or air may pass; porosity.

Usage Example

"The high impermeability of the sandstone allows rainwater to filter easily into the underground aquifer."

Strongest
impermeability
imperviousness
Strong
solidity
density

• noun (Context 2)

The state of being easily penetrated, crossed, or passed through, especially with regard to borders, defenses, or boundaries.

Usage Example

"Officials expressed concern over the impenetrability of the region's maritime borders."

Strongest
impenetrability
Strong
security

Similar words to porousness

Words similar to porousness shift depending on context. Common synonyms include:

porosity
permeability
penetrability
perviousness
absorbency
sponginess
vulnerability
openness
See all synonyms of porousness

• Nearby Words

porny
porosity
porous
porousness
porridge
port
portability

Cite this Entry

Wordmom. (2026). Antonyms for Porousness. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/porousness
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