διαμφιβάλλω
From LSJ
ἄνω ποταμῶν ἱερῶν χωροῦσι παγαί → the springs of sacred rivers flow upward, backward to their sources flow the streams of holy rivers
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.