A check mark is a small symbol used to indicate that an action has been completed or verified. However, there are several synonyms for the word "check mark." One of the most common is "tick mark," which is often used in British English. Another synonym is "check sign," as well as "check indicator" or simply "indicator." In some cases, a check mark may also be referred to as a "verification mark" or a "validation mark." Regardless of what term is used, the check mark remains an important symbol in many areas of life, from completing a to-do list to verifying the accuracy of information.