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Concise Oxford English Dictionary
dampen
■ verb
make damp.
make less strong or intense. ▶reduce the amplitude of (a sound source).

dampener noun
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EngMac
dampen
навлажнува, потиснува (чувства), се натопува; навлажува
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English-Serbian dictionary
Dampen
Ovlaziti-Utuci
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Concise Oxford Thesaurus
dampen
▶ verb
the rain dampened her face: MOISTEN, damp, wet, dew, water; poetic/literary bedew.
nothing could dampen her enthusiasm: LESSEN, decrease, diminish, reduce, moderate, damp, put a damper on, throw cold water on, cool, discourage; suppress, extinguish, quench, stifle, curb, limit, check, restrain, inhibit, deter.

dry, heighten.
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Merriam-Webster Collegiate® Dictionary
damp·en
Pronunciation: ‘dam-pən
Function: verb
Inflected Form: damp·ened ; damp·en·ing \’damp-niŋ, ‘dam-pə-\
Date: 1547

transitive verb
1 : to check or diminish the activity or vigor of : DEADEN 2 : to make damp 3 : DAMP 1C
intransitive verb
1 : to become damp
2 : to become deadened or depressed
–damp·en·er \-nər\ noun