Stifle, as a sound (6)
I believe the answer is:
deaden
(Other definitions for deaden that I've seen before include "Dampen" , "Benumb" , "Kill" , "Damp down; make less sensitive" , "Muffle impact" .)
I believe the answer is:
deaden
(Other definitions for deaden that I've seen before include "Dampen" , "Benumb" , "Kill" , "Damp down; make less sensitive" , "Muffle impact" .)