yapper

noun

Etymology: Etymology tree English yap Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English yapper From yap + -er.

1. A person's mouth, especially one that gossips or talks too much.

   “Shut your yapper or I'll shut it for you!”

2. One who yaps.

   “If you want your pack to be a deterrent against burglars or muggers, forget about small dogs, yappers though they be. Focus on the larger breeds, particularly working stock with strong instinctual drives.”

   “I have to admit I would have a lot more tolerance for cell phone yappers on my one-hour train ride to and from work if they were actually learning — instead of yelling […]”

3. Ellipsis of yapper dog

   “If you’ve got a yapper dog, take him somewhere else.”