ἴεν

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

Source

French (Bailly abrégé)

3ᵉ sg. impf. ou ao. de εἶμι.

English (Autenrieth)

see εἶμι.

Russian (Dvoretsky)

ἴεν: = ἴε, εἶμι.