BT Men 29b(7) :ינוקא דלא חכים ולא טפש‏ : a child of average intelligence [lit. who is neither smart nor dull]
See the entire entry for ḥakkīm adj. wise

BT Men 29b(7) :ינוקא דלא חכים ולא טפש‏ : a child who was neither smart nor stupid
See the entire entry for ṭp̄eš, tap̄šā adj. stupid, foolish