motormouth

A motormouth book agent mustn't speak, otherwise a magical tree will die, and so will he.

A few years later, when Lawrence saw Vaughn as the motormouth Trent in “Swingers,” he felt a joyous thrill of recognition.

Paul Giamatti would just like to put it out there that maybe he doesn’t always have to play such a motormouth.

Certainly, the unwillingness of Republicans — even a motormouth like Donald Trump — to talk about this issue suggests that there's weight to this political strategy.

Dad is grumbling in the back seat, which he shares with his motormouth 6-year-old son.