Answer: drowns

AnswerCrossword Clue
DROWNS

Extinguishes

DROWNS

Overwhelms

DROWNS

Smothers, as in ketchup

DROWNS
Overwhelms audibly, with "out"
DROWNS
Is overwhelmed
DROWNSOverwhelms sonically, with "out"
DROWNSInundates
DROWNSOverwhelms.
DROWNSMusic ... out the outside world
DROWNSOverwhelms audibly (with "out")
DROWNS... out (makes more noise)