an infant, so Irish, Old Irish nóidiu, gen. nóiden: *ne-vid-, "non-witted"? Cf. for force Greek $$Gnc/pios, infant (= $$Gnc-pios, not-wise one), from $$G-pifos, wise, $$Gpinutós (do.), root qei of ciall, q.v. So Stokes in Celt.Ph.$$+2; now *no-vidiôn ( no = ne); cf. Greek $$Gnc/pios.
Etymological dictionary of the Gaelic language.
Alexander Gairm Publications.
1982.