conjecturally
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
English > Greek (Woodhouse)
adverb
as far as one can guess: V. ὡς εἰκάσαι, ὡς ἐπεικάσαι, ὡς ἀπεικάσαι.
