διαβεβαιωτικῶς
From LSJ
ὑπὸ δὲ τῆς φιλαυτίας παρηγμένοι ἄλογα φασὶν τὰ ζῷα ἐφεξῆς τὰ ἄλλα σύμπαντα → it is self-love which leads them to say that all the other animals without exception are non-rational
Russian (Dvoretsky)
διαβεβαιωτικῶς: утвердительно Sext.
Spanish
German (Pape)
bestätigend, Sext.Emp. Pyrrh. 1.208, öfter.