slacken
/ˈslækən/
verb
- To make or become less tight, taut, or firm; to loosen.
- He slackened the rope to give the horse more room.
- The knot slackened as the wind died down.
- She slackened her grip on the handlebar.
- To become slower or less intense; to diminish.
- The storm slackened as it moved inland.
- His enthusiasm slackened after the long delay.
- The pace of work slackened during the afternoon.
Antonyms