THESAURUS
silencer
acoustic tile, antiknock, baffler, cushion, damp, dampener, damper, gag, hushcloth, muffle, muffler, mute, muzzle, quietener, silence cloth, soft pedal, sordine, sordino, sound-absorbing material, soundproofing, soundproofing insulation, sourdine
ROGET THESAURUS
silencer
Nonresonance
N
nonresonance, thud, thump, dead sound, nonresonance, muffled drums, cracked bell, damper,
silencer, nonresonant, dead, dampened, muffled.