adjective
quits
KWITS/kwɪts/
No longer owing each other anything.
The friends are quits after settling their debts and shaking hands.

Etymology
The base may be Medieval Latin quittus, used of someone discharged from a liability. In quits, that freedom becomes mutual: neither person has an outstanding claim on the other.
In context
speak ill of thy wife; for after all she is the mother of thy children. We are quits, returned Sancho; for she speaks ill of me