ὅπῃπερ

From LSJ

πολλὰ μεταξὺ πέλει κύλικος καὶ χείλεος ἄκρου → there is many a slip twixt cup and lip, there's many a slip twixt cup and lip, there's many a slip 'twixt cup and lip, there's many a slip twixt the cup and the lip, there's many a slip 'twixt the cup and the lip

Source
Click links below for lookup in third sources:
Full diacritics: ὅπῃπερ Medium diacritics: ὅπῃπερ Low diacritics: όπηπερ Capitals: ΟΠΗΠΕΡ
Transliteration A: hópēiper Transliteration B: hopēper Transliteration C: opiper Beta Code: o(/ph|per

English (LSJ)

v. ὅπη III.

German (Pape)

(verstärkt ὅπη, s. ὅπη) wie auch, τὸν λόγον ὅπῃπερ ἂν οἷοί τε ὦμεν εὐπρεπέστατα διωσόμεθα, Soph. 251a, öfter; und vom Orte, ὅπῃπερ ἂν ἀντερείδῃ, wo auch immer, Tim. 45c.