
cul-de-sac [ kuhl-duh-sak, -sak, koo l-; French kyduh-sak ] noun, plural culs-de-sac [kuhlz-duh-sak, -sak, koo lz-; French kyduh-sak] /ˈkʌlz dəˈsæk, -ˌsæk, ˈkʊlz-; French küdəˈsak/. any situation in which further progress is impossible. ... Sometimes, we think certain ties will continue on for a long long time, then we realize that they're coming to an end [...]