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

The best rocks are hard, non-porous rocks with a non-gritty surface, ideally a seven on the Mohs’ hardness scale. — Bestreviews, Mercury News, 5 Aug. 2026

The porous pass rush, poor safety play and exploitable linebacking corps share some of the blame, but the cornerbacks didn’t do Washington any favors. — Tashan Reed, Washington Post, 4 Aug. 2026

Apply enough of the product to treat the affected area, especially if the mess has soaked into the carpet or other porous material. — Caroline Lubinsky, Martha Stewart, 3 Aug. 2026

In recent years, West Africa has emerged as a key transit route for cocaine trafficked from South America to Europe, with smugglers taking advantage of porous borders and weak enforcement in parts of the region. — ABC News, 30 July 2026