Synonym of STALEMATE

Deadly : causing or able to cause death.
Dead-end : an end of a road or passage from which no exit is possible.
Deadlock : a situation, typically one involving opposing parties, in which no progress can be made.
Dead : no longer alive.
Stalemate : a situation in which further action or progress by opposing or competing parties seems impossible.

Synonym of Stalemate is Deadlock