How To Use Slack up In A Sentence

• His stock-in-trade of arch self-deprecation doesn't cut any slack up here.
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• The doctor advised Facer to slack up for few days, as his lifestyle was having a bad effect on his heart.
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• Slack up the tent ropes before it rains.
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• The doctor advised Facer to slack up for few days, as his lifestyle was having a bad effect on his heart.
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• Please slack up your speed. I can't run as fast as you!
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