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cut someone some slack - give someone some slack
informal
give additional freedom to someone
not judge someone severely
give someone a break
make some allowances for someone
allow a person to something that is usually not allowed

Examples
I know he is not up to the mark right now but let’s cut him some slack. He’s new to this environment and needs time to adjust.
Teenagers have a mind of their own. It is best
to cut them some slack and let them do what they are doing instead of enforcing things on them.
Had he explained the situation to me, I would have
cut him some slack and not have been so hard on him.
Since it was the last day of school before the vacations, the teachers
cut the students some slack and did not have any serious discussions in class.

Origin
The origin of this phrase can allude to the docking of ships, where
“give me some slack” meant to loosen the rope.

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Last week's word

pull the plug
[Informal.] pull the plug (on something)

1 Idiom - to bring to an end:
Congress pulled the plug on that plan.
2 Idiom - [no object] to disconnect life-supporting equipment from (a patient who has no chance of recovering from illness):
Pull the plug if the other choice is spending years in a coma.
3 Someone who says that they are going to do something, and on the same day, they decide against this. The reason given is usually not a true one, in order to cover their back.
Someone is going out with his friends, then 15 minutes before meeting up, he/she decides that they are not going to go as they have been asked not to or they can't be bothered, etc, so they tell everyone that they are going to 'pull the plug'.
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