Stop signs are a common sight on roads worldwide, but did you know there are several synonyms for this common traffic sign? One synonym is a "halt" sign, which is used in some European countries. Another synonym is a "red octagon," referring to the shape and color of the sign. Some people might also call it a "traffic control device" or a "road sign," although those terms are broader and can refer to other types of signage as well. In countries where English is not the primary language, the stop sign might have a different word or phrase on it entirely, such as the French "stop" or the Spanish "alto." Regardless of what it's called, the message is clear: come to a complete stop before proceeding.