What does damp mean?
Damp describes something that is slightly wet, often in a way that feels chilly, clammy, or unwelcome. It occupies a middle ground between "moist," which can sound pleasant or neutral, and "soaked" or "drenched," which imply thorough saturation. A damp towel, a damp basement, or damp weather each carry a faint air of discomfort, and prolonged dampness often suggests mold or decay. Beyond the adjectival sense, "damp" works as a noun meaning moisture itself — British speakers in particular talk about "rising damp" creeping up walls — and as a verb meaning either to moisten something lightly or to reduce its force, as when bad news dampens enthusiasm or a central bank dampens inflation. The word traces back to Middle English, likely via Germanic sources related to vapor or steam. Its most famous figurative appearance may be the British idiom "a damp squib," describing an event that promised much but fizzled out entirely.
Slightly wet, typically in an unpleasant or uncomfortable way.
"The towels were still damp after two days on the line."
More negative in tone than "moist"; implies incomplete drying or ambient humidity.
Moisture present in the air, in the ground, or in the fabric of a building.
"The old cottage suffered from persistent rising damp."
Especially common in British English when discussing buildings and property.
To make something slightly wet, or to reduce the intensity or effectiveness of something.
"Higher interest rates are expected to damp demand for new homes."
The transitive verb usually appears as "damp down" (fire, enthusiasm) or "dampen" in formal writing.
In British slang, calling something "a damp squib" means it was a total letdown — literally, a firework that's too wet to go off.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of damp
"Damp" entered English in Middle English, probably borrowed from a North Sea Germanic source such as Middle Low German or Old Norse, where related forms meant vapor or steam. Its original core meaning concerned moisture in the air or exhaled breath, which later broadened to slight wetness of surfaces. The verb senses of moistening and of checking or suppressing developed later, while derivatives such as "dampen," "dampness," and "damper" extended the word into everyday and technical use.
Word family
Usage notes
As an adjective, "damp" sits between "moist" and "wet": it suggests less water than "wet" but carries a more negative connotation than "moist," implying mildew risk, chill, or general discomfort. In building contexts (especially British English), "damp" as a noun specifically means unwanted moisture penetrating walls, as in "rising damp." The verb sense of suppressing activity or feeling is common in journalism and economics (e.g., "dampened demand").
Don't confuse with
"Dank" means unpleasantly cold and humid (typically of dark places like cellars or caves), while "damp" more generally means slightly wet without necessarily implying cold or darkness.