κατάφασις
From LSJ
τὸ δὲ ποιεῖν ἄνευ νοῦ ἃ δοκεῖ καὶ σὺ ὁμολογεῖς κακὸν εἶναι: ἢ οὔ → but doing what one thinks fit without intelligence is—as you yourself admit, do you not?—an evil
English (LSJ)
εως, ἡ,
A affirmation, affirmative proposition, opp. ἀπόφασις, Pl.Def.413c, Arist.Int.17a25, al., EN1139a21. 2 affirmative particle, A.D.Adv.124.9, Synt.245.22.