ἀπτοητί

From LSJ

ξένῳ δὲ σιγᾶν κρεῖττον ἢ κεκραγέναι → it's better for a stranger to keep silence than to shout (Menander)

Source

Spanish (DGE)

adv. sin temor ἀ. κατετόλμησαν Basil.M.31.641A.