νεανίης
From LSJ
οἱ βάρβαροι τῇ ἀλήκτῳ συνουσίᾳ ὑπνώθησαν → the barbarians, exhausted by unremitting intercourse, fell asleep
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.