κατ-ασχολέομαι · kat-ascholeomai — LSJ
to be engaged, περὶ τῶν ἐόντων, of sciences, Perict. ap. Stob. 3.1.121; τὸ κατησχολημένον περὶ τὸν ἀνθρώπινον βίον Placit. 1 Prooem., cf. Archyt. ap. Iamb. Comm.Math. 8, Apollon. Mir. 7, Theol.Ar. 18; to be concerned, worried about, περί τι PRein. 18.18 (ii B.C.), Phld. Rh. 2.139 S.