Answer: motormouth

AnswerCrossword Clue
MOTORMOUTHChatterbox
MOTORMOUTHConstant talker
MOTORMOUTHIncessant talker
MOTORMOUTHNonstop talker
MOTORMOUTHTalkative one, slangily
MOTORMOUTHTalkative student
MOTORMOUTHTalker who won't stop
MOTORMOUTHFast-talker's malady?
MOTORMOUTHUsed-car salesman?
motormouth(US slang) a nonstop talker
motormouthA person who talks quickly and incessantly