damp
noun
a slight wetness
verb
deaden (a sound or noise), especially by wrapping
restrain or discourage
“the sudden bad news damped the joyous atmosphere”
make vague or obscure or make (an image) less visible
“muffle the message”
lessen in force or effect
“soften a shock”
“break a fall”
adjective
slightly wet
“clothes damp with perspiration”
“a moist breeze”
Source: WordNet 3.1, Princeton University