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ἐπειδὴ

Ἀλλ’ ἐσθ’ ὁ θάνατος λοῖσθος ἰατρός κακῶν -> But death is the ultimate healer of ills
Sophocles, Fragment 698

Greek (Liddell-Scott)

ἐπειδὴ: ἢ ἐπεὶ δὴ (ὡς γράφεται νῦν παρ’ Ὁμ.) ἐντονώτερος τύπος τοῦ ἐπεὶ, ἴδε ἐν λ. ἐπεί.