Deadlock (noun)

1. An impasse or stalemate, usually in negotiations or discussions.
2. A situation in which two or more parties are unable to reach agreement or make progress.

Origin:

From dead + lock, meaning a state of being unable to proceed or make progress.

Examples:

1. The negotiations came to a deadlock when both parties refused to compromise.
2. The meeting ended in a deadlock with no resolution to the problem.
3. The deadlock in the legislature prevented the passing of any new laws.
4. The committee reached a deadlock on the issue of funding for the project.
5. The deadlock between management and labor resulted in a strike.