The verb 'start' originates from the Old English 'styrtan', meaning "to leap up, jump, or move suddenly." This Old English term is related to the Middle High German 'stürzen', meaning "to fall or plunge." The core sense of a sudden, abrupt movement evolved over time. By the 14th century, it had developed the broader meaning of "to begin to move or act," which eventually generalized to the primary modern sense of "to begin." The logic of its evolution is from a specific physical action (a sudden leap) to the more abstract concept of initiating any process or event.

The word 'start' is a simplex word of Germanic origin. It functions as a complete lexical unit.