νεανίης
From LSJ
ταῦτα δηλώσω αὐτός τε νοσήσας καὶ αὐτὸς ἰδὼν ἄλλους πάσχοντας → I shall describe those symptoms, since I myself had the disease and witnessed as well what others were suffering
Middle Liddell
νεᾱνίης, ου, νέος
I. a young man, youth, with ἀνήρ, Od.; so, παῖς νεηνίης Hdt.; alone, like νεανίσκος, Soph., Eur., etc.
2. youthful, i. e. in good sense, impetuous, brave, active, Eur., Ar., etc.; or in bad sense, hot-headed, headstrong, Eur., Dem.
II. of things, new, young, fresh, Eur.
