From apo and a (presumed) derivative of stoma; to speak off-hand (properly, dictate), i.e. To catechize (in an invidious manner) -- provoke to speak.
see GREEK apo
see GREEK stoma
1. to recite from memory: Themistius, or. 20, p. 238, Hard. edition; to repeat to a pupil (anything) for him to commit to memory: Plato, Euthyd., p. 276 c., 277 a.; used of a Sibyl prophesying, Plutarch, Thes. 24.
2. to ply with questions, catechize, and so to entice to (off-hand) answers: τινα, Luke 11:53.