The Chinese word **填写 (tiánxiě)**, meaning "to fill in (a form, etc.)," is a compound verb formed through the common morphological process of combining two characters with related meanings: **填 (tián)**, which means "to fill" or "to stuff," and **写 (xiě)**, which means "to write." This combination creates a new, more specific meaning through semantic synthesis, where the first character denotes the general action (filling) and the second specifies the medium or method (writing), resulting in a precise verb that describes the act of completing a written document by entering required information into designated spaces.