Word: óg (OHG - like English “oak”, but with a “g”)
Meaning: óg = young
Usage:
History: Óg comes from Old Irish “oac”, which comes from a Common Celtic word reconstructed as “yuwankos”. Modern Welsh “ieuanc, ifanc” and Breton “yaouank” more closely resemble the ancestral word, which comes ultimately from the Indo-European root *yeu- (vital force, youthful vigour). English cognates include “young” and “juvenile”.