μὴ κακὸν εὖ ἔρξῃς· σπείρειν ἴσον ἔστ' ἐνὶ πόντῳ → do no good to a bad man; it is like sowing in the sea
ὕπουλος, ἐξωτερικός, ὑπερόριος, ὑπερούριος, ὀθνεῖος, θυραῖος, περίαπτος