Definition & Meaning of "yapper"in English

What is the origin of the term "yapper" and how is it used?

"Yapper" is a slang term for a person who talks excessively, often without saying anything useful. It appeared in English in the 19th century, derived from "yap," an informal verb meaning to bark or yap like a small dog, extended metaphorically to noisy or trivial human talk. The term is used in informal, mocking, or lightly critical contexts to describe chatterers or naggers. It is mildly derogatory, context-dependent, and not vulgar, signaling annoyance rather than strong insult.