ἀρκύστατα

From LSJ

ὁ δ' εὖ ἔρδων θεοὺς ἐλπίδι κυδροτέρᾳ σαίνει κέαρ → but he who does well to the gods cheers his heart with a more glorious hope

Source

Russian (Dvoretsky)

ἀρκύστατα: τά Aesch., Soph. = ἀρκυστασία.