Answer: drowns

AnswerCrossword Clue
DROWNSExtinguishes
DROWNSOverwhelms
DROWNSSmothers, as in ketchup
DROWNSOverwhelms audibly, with "out"
DROWNSIs overwhelmed
DROWNSOverwhelms sonically, with "out"
DROWNSInundates
DROWNSOverwhelms.
DROWNSMusic ... out the outside world
DROWNSOverwhelms audibly (with "out")
DROWNS... out (makes more noise)
drownsto die by suffocation in liquid
drownsto kill by suffocation in liquid
drownsDROWN, to suffocate in water
drownsto flood