διαμφιβάλλω
From LSJ
Ὅσον ζῇς, φαίνου, μηδὲν ὅλως σὺ λυποῦ· πρὸς ὀλίγον ἐστὶ τὸ ζῆν, τὸ τέλος ὁ χρόνος ἀπαιτεῖ. → While you live, shine; have no grief at all; life exists only for a short while, and time demands its toll.
English (LSJ)
A doubt, ὅτι οὐ .. but that... Simp.in Cat.417.5.
Spanish (DGE)
poner en cuestión, discutir περὶ τὴν κατανόησιν τοῦ ὑποκειμένου Gr.Nyss.Eun.2.284, cf. Theod.Lect.Epit.11
•c. complet. c. ὅτι Simp.in Cat.417.5, in Ph.1172.26.