πλανώδης
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 (LSJ)
ες,
A wandering, esp. 1 = πλάνης 1.3, πυρετοί Hp. Coac.582. 2 liable to slip, of ligatures, Id.Off.9 (Sup.); ἄρθρον Id.Fract.45 (Comp.); of the womb, Aret.SA2.11. 3 metaph., rambling, γνώμη π. Id.SA2.11 (Comp.). Adv. -δῶς Phld.Lib.p.32 O.