Liddell–Scott–Jones: ἐπιβουλ-ή

ἐπιβουλ-ή,ἡ,

A. plan formed againstanother,plot, scheme, Hdt. 1.12 , Th. 4.77 , 86 , Isoc. 4.148 , etc.; ἐπιβουλὴν ἐπιβουλεύειν

Lys. 13.18

;πρός τιναagainst one, X. An. 1.1.8 ;ἐξ ἐπιβουλῆςbytreachery, treacherously,ἐξ ἐ. ἀποθανεῖν, ἐξ ἐ. φονεὺς εἶναι, Antipho 2.1.5 , 1.3 , cf. Th. 8.92 , X. An. 6.4.7 , etc.;μετὰ ἐπιβουλῆς designedly, Pl. Lg. 867a , al.