"No through road" is a common road sign that indicates a dead-end street or a road that does not connect to other routes. As a result, there are several synonyms that can be used to describe such roads. Some of these synonyms include cul-de-sac, dead end, impasse, road block, and blind alley. A cul-de-sac is a street with a single point of entry and exit, which eventually leads to the same point. A dead end is also a road that ends abruptly without a connecting route. On the other hand, an impasse suggests a difficult situation with no immediate solution, and a blind alley is a street that has no exit or outlet. These synonyms can be used interchangeably to describe a "no through road".