slackenslack·en /ˈslækən/ (also slacken off) verb [intransitiveI, transitiveT] to gradually become weaker or less active, or to make something do thisAs business slackens, accounting firms are reducing their professional staffs and shaking up office leadership.
Industrialdemand hasslackened off because of the worldwide economic slowdown.
The ending of a special tax incentive is widely expected toslacken the pace of new car purchases.
—slackening noun [uncountableU]The price cuts may help exporters get through the usual seasonalslackening of oildemand in the second quarter.