Synonyms of porous

porous

adjective

ˈpȯr-əs 

as in penetrable

capable of being passed into or through

a cleaner that should not be used on porous surfaces

Synonyms & Similar Words

• penetrable
• permeable
• absorbent
• pervious
• passable
• breathable

Antonyms & Near Antonyms

• impermeable
• impervious
• impenetrable
• impassable
• dense
• nonporous
• airtight
• thick
• compact
• watertight
• close

Example Sentences

Recent Examples of porous

His income will be augmented by a deal to help control Haiti’s porous border with the Dominican Republic for the next 10 years in return for 10% of any new customs revenue collected. — Nick Paton Walsh, CNN Money, 17 Oct. 2026

No side have spent a larger share of match time in winning positions than Chelsea’s 53 per cent, and those game states help to explain both their strong attacking numbers and porous defensive record. — Conor O'Neill, New York Times, 15 Oct. 2026

The porous bones of an invasive starfish breed that has devastated shellfish and seaweed farms, says Star’s Tech founder Seungchan Yang. — Martin Cizmar, Time, 15 Oct. 2026

That’s due to the scarcity of this type of tree, as well as the porous nature of the wood which means that there is a very high angel’s share during maturation. — Jonah Flicker, Robb Report, 12 Oct. 2026