call it quits

present singular third person calls it quits · participle present calling it quits · participle past called it quits · past called it quits

1. To conclude; to quit or stop an activity, especially after applying oneself to it for a significant period of time.

   The West's longest-serving foreign minister called it quits last week.

   1992 May 11, “A One-Two Punch Rattles Germany”, in Time

   1 more example

   One afternoon, after twenty minutes of desperate efforts to annihilate each other according to set rules that did not permit kicking, striking below the belt, nor hitting when one was down, Cheese-Face, panting for breath and reeling, offered to call it quits.

   1909, Jack London, chapter 15, in Martin Eden

   Synonyms: call it a day

2. To declare debts resolved to one another.

   Synonyms: call it even