dampen

[1]	damp , stifle , moisten , sprinkle , bedew
[2]	stifle , moisten , wash , deaden , damp , check , chill , cool , restrain , retard , lessen , diminish , reduce , suppress , abate , moderate , allay , subdue , temper , dull , discourage
[3]	muffle , mute , dull , damp , tone down
[4]	deaden , damp
[5]	damp , soften , weaken , break