ratchet mouth

ratchet mouth

A person who talks incessantly or irrepressibly. Jake is such a ratchet mouth that I find it exhausting talking to him! You need to quit being such a ratchet mouth in the classroom!
See also: mouth, ratchet

ratchet-mouth

and motor-mouth
n. someone who talks incessantly. (Also a term of address.) Tell that ratchet-mouth to shut up! Hey, motor-mouth! Don’t you ever stop?