When it comes to synonyms for "be quits with," there are several options to choose from. One common phrase that has a similar meaning is "even the score." This phrase implies that a person wants to make things equal or fair between themselves and another person. Another synonym is "square up with," which indicates that a person wants to settle a debt or resolve a conflict. A third option is "settle up with," which means to pay or resolve an outstanding balance. Overall, while there may be some slight nuances of difference between these phrases, they all convey the idea of balancing the scales and making things fair and equal.