Answer: slacken

AnswerCrossword Clue
SLACKENSlow down.
slackento make or become slack
slackento loosen or retard, also SLACK
SLACKENSubside
SLACKENEase up, as a downpour
SLACKENLose tautness
SLACKENAbate
SLACKENRelax
SLACKENGrow limp.
SLACKENSlow down
SLACKENEase off.
SLACKENLet up.
SLACKENSlow up.
SLACKENLose tension
SLACKENLet up
SLACKENBecome looser
SLACKENLoosen up