Answer: subside

AnswerCrossword Clue
SUBSIDESettle down
SUBSIDEAbate
SUBSIDEDwindle
SUBSIDESlow
SUBSIDEFall into a state of quiet.
SUBSIDEQuiet down.
SUBSIDEEbb
SUBSIDEOpposite of swell
SUBSIDERecede
SUBSIDEWeaken
SUBSIDEBecome less intense
subsideto sink; settle
subsideto become less active or violent
subsideto sink to a lower or normal level