| 1 | Dutch | loeris | fool, dumbass, tool, ne'er-do-well |
| 2 | Dutch | loer | lure |
| 3 | French | lourd | heavy; clumsy, oafish; annoying, a drag |
| 4 | Middle French | lourd | heavy |
| 5 | Old French | lourt | — |
| 6 | Late Latin | lurdus | slow; stupid; slow, heavy; clumsy, stupid |
| 7 | Latin | luridus | pale yellow, wan, sallow, lurid; ghastly,... |
| 8 | Latin | luror | paleness, pallor, lividness |
| 9 | Proto-Italic | *loiros | — |