κρεῖττον σιωπᾶν ἐστιν ἢ λαλεῖν μάτην → it's better to keep silence than to speak without reason (Menander)
dēfindō, ĕre, tr., fendre : Enn. Ann. 397.
defindo defindere, defidi, defissus V TRANS :: split down the whole length
dē-findo, ere, spalten, malos, Enn. ann. 397.