ἀρνεῖσθαι

From LSJ

ἡ γὰρ σιωπὴ τοῖς σοφοῖσιν ἀπόκρισις → silence, you see, is an answer for the wise (Menander)

Source

Greek > English (Woodhouse Verbs Reversed)

(see also ἀρνέομαι): deny