call it quits
To stop working or trying, quit

[TahlilGaran] Dictionary of Contemporary English ▲

call it quits
1.
to stop doing something.
The relationship had been going from bad to worse and we just decided it was time to call it quits.

2.
to agree with someone that a debt has been paid and that no one owes money to anyone.
You paid for the theatre tickets so if I pay for dinner we can call it quits.

[TahlilGaran] English Idioms Dictionary ▲

call it quits
to stop, to finish
I called it quits and went home for the day.

[TahlilGaran] English Idioms Dictionary ▲

call it quits
v. phr., informal
1. To decide to stop what you are doing; quit.
When Tom had painted half the garage, he called it quits.
2. To agree that each side in a fight is satisfied; stop fighting because a wrong has been paid back; say things are even.
Pete called Tom a bad name, and they fought till Tom gave Pete a bloody nose; then they called it quits.
3. To cultivate a habit no longer.
"Yes, I called it quits with cigarettes three years ago."

[TahlilGaran] English Idioms Dictionary ▲