22 Moby Thesaurus words for "soundproofing": acoustic tile, antiknock, baffler, cushion, damp, dampener, damper, gag, hushcloth, muffle, muffler, mute, muzzle, quietener, silence cloth, silencer, soft pedal, sordine, sordino, sound-absorbing material, soundproofing insulation, sourdine