The word "揪揪" is formed by reduplicating the single character "揪", which is a phonetic-semantic compound consisting of the hand radical "扌" on the left, indicating a hand-related action, and the component "秋" on the right, primarily providing its phonetic sound. This duplication results in a colloquial term that often conveys a repeated, diminutive, or informal sense of the action, such as light pulling or pinching.