τραυλίζω
From LSJ
Πολλὰ τὰ δεινὰ κοὐδὲν ἀνθρώπου δεινότερον πέλει → There are many wondrous things in this world, but none more wondrous than humans
English (LSJ)
A mispronounce a letter, lisp, as Alcibiades made r into l, Ar.V.44; ψελλίζονται καὶ τραυλίζουσι· τοῦτο δ' ἐστὶν ἔνδεια τῶν γραμμάτων Arist.PA660a26; πασχούσης [τῆς γλώττης] τραυλίζειν καὶ ψελλίζειν συμβαίνει Gal.16.510; of children, Ar.Nu.862,1381, Arist.HA536b8; σοφὰ . . -ίζουσα χελειδονίς IG14.1934f7:—Med., Archipp.45.