Question

lead to a dead end In spite of our efforts, the marketing research led to a dead end.

Accepted Answer

If a plan or project leads to a dead end, it develops no further because it has no future.

Phrase/Idiom	lead to a dead end
Definition	If a plan or project leads to a dead end, it develops no further because it has no future.
Example	In spite of our efforts, the marketing research led to a dead end.

Dead Lead End Plan Project Develops Future Spite