French word quinzaine comes from French quinze (Fifteen.), French -aine
| Dictionary entry | Language | Definition |
|---|---|---|
| quinze | French (fra) | Fifteen. |
| -aine | French (fra) | (noun, or, adjective) (demonyms). (noun-only) Indicates approximation, suffixed to a number. |
| quinzaine | French (fra) | A period of fifteen consecutive days. By extension, two weeks; a fortnight.. About fifteen people, about fifteen things, etc. |