ἀσύμβατος
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)
Att. ἀξ-, ον,
A not coming to terms, τὸ ἀξ. Th.3.46; ἀ. ἐχθρός Ph.1.223; ἀντίθεσις ἀ. irreconcilable, Plu.2.946e, cf. Procl. Inst.28, Dam.Pr.5. Adv. -τως, ἔχειν to be irreconcilable, Ph.Fr.24 H., Plu.Cic.46: neut. Pl. as Adv., ἀσύμβατα μνησικακοῦντες Ph.2.520. 2 not comparable, disparate: εἰς ἕτερα ἀ. incongruous in other respects, Gal.5.540. 3 τραῦμα ἀ. wound that will not close up, heal, Aret.CA2.2. II Act., bringing no agreement, κοινολογία Plb.15.9.1.