αὐτεπάγγελτος
From LSJ
μὴ κακὸν εὖ ἔρξῃς· σπείρειν ἴσον ἔστ' ἐνὶ πόντῳ → do no good to a bad man; it is like sowing in the sea
English (LSJ)
ον,
A offering of oneself, of one's free will, αὐ. ἠθέλησε συμβαλέσθαι χρήματα Hdt.7.29; αὐ. ὑποστῆναι E.HF706; παρεῖναι, χωρεῖν, Th. 1.33, 4.120; βοηθεῖν Isoc.1.25; ἐθελονταί D.18.68. Adv. -τως Ph. 2.173. II self invited, dub. in Luc.JTr.37.