noun, noun or participle which takes 'suru'
talking back; retort
Refers to answering back or giving a sharp reply, often with a defiant or argumentative tone. Can be used as a noun or with する.
親に口返答をするなんて、あまり感心しない。
Talking back to your parents is not very admirable.
彼は上司に口返
He talked back to his boss and got scolded.