Answer: deadener

AnswerCrossword Clue
DEADENERSound attenuator
DEADENERNumber?
DEADENERNumbing agent
DEADENERNumber
DEADENERThat which devitalizes.
DEADENERNoise-killer.
DEADENERBenzocaine, e.g.
DEADENERPainkiller, e.g.
deadenerone that deadens (to deprive of feeling)