The term DEADEN, AS SOUND can be summarized by the crossword solution MUFFLE, which is a 6-letter word. MUFFLE means to reduce the intensity of sound, usually by wrapping or covering something with a soft material. It is commonly used to describe the act of reducing the volume of a sound, such as music or speech. In this context, DEADEN, AS SOUND can be interpreted as reducing the intensity of sound in order to make it less audible.