- slightly wet; moist: damp weather; a damp towel.
- unenthusiastic; dejected; depressed: The welcoming committee gave them a rather damp reception.
- moisture; humidity; moist air: damp that goes through your warmest clothes.
- a noxious or stifling vapor or gas, especially in a mine.
- depression of spirits; dejection.
- a restraining or discouraging force or factor.
- to make damp; moisten.
- to check or retard the energy, action, etc., of; deaden; dampen: A series of failures damped her enthusiasm.
- to stifle or suffocate; extinguish: to damp a furnace.
- Acoustics, Music. to check or retard the action of (a vibrating string); dull; deaden.
- Physics. to cause a decrease in amplitude of (successive oscillations or waves).
- damp off, to undergo damping-off.
Origin of damp
- (intr, adverb) (of plants, seedlings, shoots, etc) to be affected by damping off
- slightly wet, as from dew, steam, etc
- archaic dejected
- slight wetness; moisture; humidity
- rank air or poisonous gas, esp in a mineSee also firedamp
- a discouragement; damper
- archaic dejection
- to make slightly wet
- (often foll by down) to stifle or deadento damp one's ardour
- (often foll by down) to reduce the flow of air to (a fire) to make it burn more slowly or to extinguish it
- physics to reduce the amplitude of (an oscillation or wave)
- music to muffle (the sound of an instrument)
Word Origin and History for damp off
late 14c., "to suffocate," from damp (n.). Figurative meaning "to deaden (the spirits, etc.)" attested by 1540s. Meaning "to moisten" is recorded from 1670s. Related: Damped; damping.
1580s, "dazed," from damp (n.). Meaning "slightly wet" is from 1706. Related: Dampness.
early 14c., "a noxious vapor," perhaps in Old English but there is no record of it. If not, probably from Middle Low German damp; ultimately in either case from Proto-Germanic *dampaz (cf. Old High German damph, German Dampf "vapor;" Old Norse dampi "dust"). Sense of "moisture, humidity" is first certainly attested 1706.