καθεκ-τός · kathek-tos — LSJ
to be held back, checked, could, be retained in the hands of, contain, so as, to be restrained
to be held back, checked, θρασὺς καὶ βδελυρὸς καὶ οὐδὲ κ. ἔτι D. 21.2, cf. Plu. Fab. 10, Pomp. 66; τῶν πραγμάτων οὐκέτι πολλοῖς ὄντων καθεκτῶν since power could not be retained in the hands of many, Id. Brut. 47; ἐν τῷ κ. εἶναι to contain oneself, Philostr. Im. 2.6. Adv. οὐ -τῶς so as not to be restrained, μάχεσθαι Id. Her. 10.5.
II in the grip of
in the grip of, λούπησι χαλεπῆσιν Corinn. Supp. 1.28.