dead end

n. cul de sac, street which has no exit; something which has no future, something which will never produce positive results

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.
See more at Wikipedia.org...

Dead End or Dead-end may refer to:Common UsageCul-de-sac, a street or alley that must be exited from the same spot it is entered from
See more at Wikipedia.org...

Dead end or Dead End can refer toA Cul-de-sac, or dead-end streetDead End—the 1937 filmDead End (2003 film)—the 2003 filmDead End (Anti-Pattern)—and  anti-pattern or pitfall in problem-solvingDead End (Transformers)—several Transformers characters Dead End Kids—acting team of the 1930s-1950s also known as the Bowery BoysDead-end elimination—a minimization algorithm used in  protein structure predictionDead-end tower—a type of electrical transmission tower For the list of Wikipedia dead-end pages see Wikipedia:Deadend pages
See more at Wikipedia.org...

Noun
1. a passage with access only at one end
(synonym) cul, cul de sac
(hypernym) passage
2. a situation in which no progress can be made or no advancement is possible; "reached an impasse on the negotiations"
(synonym) deadlock, impasse, stalemate, standstill
(hypernym) situation

Adjective
1. lacking opportunities for development or advancement; "stuck in a dead-end job"
(similar) inactive

The end of a water main which is not connected to other parts of the distribution system.

the closed end of a road or an impasse The negotiations between the team and the owners have come to a dead end.