Definition & Meaning of "slapper"in English

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

Slapper is a slang term that appeared in mid-20th-century English to describe a woman considered coarse, promiscuous, or sexually indiscriminate. The term likely comes from the verb "slap," used metaphorically to suggest roughness, boldness, or loose behavior. Historically, it was derogatory and insulting, intended to shame or demean women for their sexual conduct. Today it remains offensive and informal, generally used in critical, mocking, or colloquial contexts rather than polite or neutral conversation.