uchikiru
1.

To forcibly end or terminate an ongoing action or process, often before its intended completion.

2.

To decisively interrupt or halt a situation, such as negotiations or support, before reaching a conclusion.

3.

To cut off an ongoing activity or discussion abruptly, indicating a clear stop or cessation.

4.

To bring an end to continuous engagement in a game or activity, such as in a board game context.

Example:

この交渉を打ち切りたい。