From Longman Dictionary of Contemporary Englishcut/give somebody some slackcut/give somebody some slackspoken to allow someone to do something without criticizing them or making it more difficultHey, cut me some slack, man. I’m only a few bucks short. →slack
Examples from the Corpus
cut/give somebody some slack• She played the fish, gave it some slack and let it run till it hesitated, then slowly drew it back.• Hey, cut me some slack, man, I'm only a few bucksshort.• The fish must have come forward to give the line some slack.