The word "代言人" (dàiyánrén) is formed through a logical, morphemic compounding common in Chinese, where "代" (dài) means "to represent or act on behalf of", "言" (yán) means "to speak", and "人" (rén) means "person". When combined, these elements literally construct the meaning "a person who speaks on behalf [of another]", directly yielding the modern terms "spokesperson" or "endorser", where the individual publicly represents and advocates for a brand, cause, or entity.