1. To make damp or moist; to make slightly wet.
2. To depress; to check; to make dull; to lessen. In a way that considerably dampened our enthusiasm. The Century.
DAMPEN
Damp"en, v. i.
Defn: To become damp; to deaden. Byron.
DAMPER
Damp"er, n.
Defn: That which damps or checks; as: (a) A valve or movable plate in the flue or other part of a stove, furnace, etc., used to check or regulate the draught of air. (b) A contrivance, as in a pianoforte, to deaden vibrations; or, as in other pieces of mechanism, to check some action at a particular time. Nor did Sabrina's presence seem to act as any damper at the modest little festivities. W. Black.
DAMPISH
Damp"ish, a.
Defn: Moderately damp or moist.
— Damp"ish*ly, adv.
— Damp"ish*ness, n.
DAMPNE
Damp"ne, v. t.
Defn: To damn. [Obs.] Chaucer.