ἀβέβηλος
From LSJ
ὃν οὐ τύπτει λόγος οὐδὲ ῥάβδος → if words don't get through, neither a beating will | if the carrot doesn't work, the stick will not work either | whom words do not strike, neither does the rod
English (LSJ)
ον,
A sacred, inviolable, Plu.Brut.20, cf. Cam.30; of persons, pure, Inscr.Prien.113.67.
German (Pape)
[Seite 2] (nicht zu betreten, dah.) geweiht, heilig, Plut. Brut. 26 Camill. 30.