κυκλοειδής
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)
ές,
A circular, Euc.Opt.36, Onos. 21.6, Ath.7.328d; τὸ κ. Plu.2.1004c. Adv. -δῶς Gal.Phil.Hist.100, Porph.in Cat.133.4.