cul, cul de sac, dead end (noun)

a passage with access only at one end

deadlock, dead end, impasse, stalemate, standstill (adj)

a situation in which no progress can be made or no advancement is possible

"reached an impasse on the negotiations"

dead-end (adj)

lacking opportunities for development or advancement

"stuck in a dead-end job"

dead end (Noun)

A path or strategy that goes nowhere or is blocked on one end.

Dead End

Dead End is a 1937 crime drama film. It is an adaptation of the Sidney Kingsley 1935 Broadway play of the same name. It stars Humphrey Bogart, Joel McCrea, and Sylvia Sidney. It is notable as being the first film appearance of the Dead End Kids.