1. [ noun ] a passage with access only at one end
Synonyms: cul_de_sac deadend cul
Related terms: passage
2. [ noun ] (transportation) a street with only one way in or out
Synonyms: cul_de_sac dead-end_street impasse blind_alley
Related terms: thoroughfare
3. [ noun ] a situation in which no progress can be made or no advancement is possible
Synonyms: impasse deadlock standstill stalemate

"reached an impasse on the negotiations"

Related terms: arrest situation stand_still
Similar spelling:   deadend