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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

Spanish (DGE)

-ές
oculto, que se realiza a escondidas τὰ ἐγκρυφῆ λῃστευτικά Eust.Op.93.43, cf. Sud.