slack
cut someone some slack allow someone some leeway; make allowances for someone's behaviour. North American informal
2013BenSilent Words Speak Loudest Perhaps… we should cut Nash … some slack. After all, to the 11-year-old Nash … the Spice Girls' superficial sloganeering may have genuinely seemed like feminism.
take (or pick) up the slack
1 pull on the loose end or part of a rope in order to make it taut.
2 use up a surplus or improve the use of resources to avoid an undesirable lull in business.