Each week of 2017 we present an English idiom.
"to cut (somebody) some slack": to be lenient or not strict with somebody; mit jdm nachsichtig sein
Example 1: We should cut him some slack. After all, he just starting working here a few weeks ago and probably didn't know about the policy.
Example 2: If we cut Ulrike some slack for her terrible presentation last week, we'd be sending a signal to everyone that her level of performance is acceptable.