dampen

verb

1. smother or suppress

   verb.change

   Synonyms stifle

   Antonyms excite stimulate

   Source: WordNet 3.0

2. make moist

   verb.change

   Synonyms moisten wash

   Source: WordNet 3.0

3. deaden (a sound or noise), especially by wrapping

   verb.perception

   Synonyms damp dull muffle mute tone down

   Source: WordNet 3.0

4. reduce the amplitude (of oscillations or waves)

   verb.change

   Source: WordNet 3.0

5. make vague or obscure or make (an image) less visible

   verb.change

   Synonyms damp deaden

   Source: WordNet 3.0

6. check; keep in check (a fire)

   verb.change

   Source: WordNet 3.0

7. lessen in force or effect

   verb.change

   Synonyms break damp soften weaken

   Source: WordNet 3.0

8. To make damp or moist; to make slightly wet.

   verb

   Source: webster1913

9. To become damp; to deaden.

   verb

   Source: webster1913