Find Synonyms

porous Synonyms

Another word for porous

Choosing another word for porous depends on context, so the 11 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

Having minute spaces or holes through which liquid or air may pass; permeable to fluids.

Usage Example

"Sandstone is a highly permeable rock that holds large amounts of groundwater."

Strongest
permeable
pervious
Strong
absorbent
spongy
penetrable
honeycombed
cellular

• adjective (Context 2)

Not secure or well-protected; allowing people or things to pass or cross easily (especially of a border or defense).

Usage Example

"Customs officials struggled to monitor smuggling across the country's long, penetrable border."

Strongest
penetrable
Strong
leaky
unsecured
vulnerable
open

Opposites of porous

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

nonporous
impenetrable
impervious
impermeable
secure
impregnable
airtight
watertight
See all opposites of porous

• Nearby Words

pornography
porny
porosity
porous
porousness
porpoise
porridge

Cite this Entry

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