| 1 | Scottish Gaelic | gille | servant, follower; boy, lad, youth; man, boy |
| 2 | Middle Irish | gilla | youth; male child, boy; messenger, page, servant |
| 3 | Old Norse | gildr | stout, brawny, of full worth; brawny, stout; of... |
| 4 | Proto-Germanic | gildiz | valuable, wholesome, precious |
| 5 | Proto-Indo-European | gʰeldʰ- | to repay, reward; to pay; to pay for, repay |