| Language | Reflex(es) | Gloss | Grammar | Sources |
|---|
| Celtic |
| Old Irish | ōac | young | adj | LRC |
| Irish | gall | foreigner | n.masc | W7 LRC |
| Irish | gallōglach | heavily-armed soldier | n.masc | W7 IED LRC |
| Irish | ōglach | soldier | n.masc | W7 LRC |
| Welsh | ieuanc | young | adj | LRC |
| English |
| Old English | gēoguþ, gī(o)goþ, īuguþ | youth | n.fem | W7 ASD LRC |
| Old English | ge(o)ng, gi(o)ng, g(i)ung | young | adj | W7 ASD LRC |
| Middle English | June | June | prop.n | W7 LRC |
| Middle English | yong | young | adj | W7 LRC |
| Middle English | youthe | youth | n | W7 LRC |
| English | gallowglass | mercenary/retainer of Irish chief | n | AHD W7 LRC |
| English | June | 6th month (in Gregorian calendar) | prop.n | AHD W7 LRC |
| English | junior | younger | adj | AHD W7 LRC |
| English | junior | person younger than another | n | AHD W7 LRC |
| English | juvenile | young, physiologically immature/undeveloped | adj | AHD W7 LRC |
| English | rejuvenate | to reinvigorate, make young/youthful again | vb | AHD W7 LRC |
| English | young | re: first/early phase of life/growth/development | adj | AHD W7 LRC |
| English | youngster | child, young person | n | W7 LRC |
| English | youth | life phase of growth/development | n | AHD W7 LRC |
| West Germanic |
| Old Frisian | jung, jong | young | adj | ASD LRC |
| Frisian | jong | young | adj | ASD LRC |
| Dutch | jong | young | adj | ASD LRC |
| Dutch | jongen | boy, youngster | n | TLL LRC |
| Old Saxon | juguð | youth | n | ASD LRC |
| Old Saxon | jung | young | adj | ASD LRC |
| Low German | jung, junk | young | adj | ASD LRC |
| Old High German | jugund | youth | n | ASD LRC |
| Old High German | jung | young | adj | W7 LRC |
| Middle High German | junc | young | adj | ASD LRC |
| German | Jugend | youth, adolescence | n.fem | ASD LRC |
| German | jung | young | adj | ASD LRC |
| German | Junge | boy, lad, youngster | n.masc | LRC |
| German | Junge | drop, hatchling | n.neut | LRC |
| German | Juni | June | n.masc | LRC |
| North Germanic |
| Old Norse | ungr | young | adj | LRC |
| Icelandic | ungr | young | adj | ASD LRC |
| Danish | ung | young | adj | ASD LRC |
| Swedish | ung | young | adj | ASD LRC |
| East Germanic |
| Gothic | jungs | young | adj | LRC |
| Gothic | yuggs | young | adj | ASD LRC |
| Italic |
| Latin | junior | younger | adj.comp | W7 LRC |
| Latin | Junius | June | prop.n.masc | W7 LRC |
| Latin | juvenilis | re: young person | adj | W7 LRC |
| Latin | juvenis | young man/woman | n.masc | W7 LRC |
| Middle French | Juin | June | prop.n.masc | W7 LRC |
| French | juvénile | re: young person | adj | W7 LRC |
| Balto-Slavic |
| Lithuanian | jáunos | young | adj | LRC |
| Latvian | jauna, jaûns | young, new | adj | LRC |
| Old Church Slavonic | junz | young | adj | LRC |
| Hellenic |
| Homeric Greek | αἰζηός | strong, lusty, vigorous | adj | LRC |
| Indo-Iranian |
| Avestan | yavan | young | adj | LRC |
| Sanskrit | yúvā | youth | n | LRC |