| 1 | Old French | blanchir | |
| 2 | Old French | blanc | white |
| 3 | Late Latin | blancus | white |
| 4 | Frankish | blank | bright; gleaming, white, blinding; bright,... |
| 5 | Proto-Germanic | *blank | — |
| 6 | Proto-Germanic | blankaz | bright, shining, white, gleaming, blinding |
| 7 | Proto-Indo-European | bhleg- | to shine, white; to shine, burn, scorch |