λῃστική

From LSJ

τοῖς οἰκείοις συκοφαντίαν δέδωκεν → has given to his friends an opportunity for chicane, has offered to his friends the right of vindictive prosecution

Source

Russian (Dvoretsky)

λῃστική: ἡ (sc. τέχνη) разбойничание, разбой, грабеж Plat.