French word nonchalant comes from Latin calere, Latin non (Not.), Old French non-
| Dictionary entry | Language | Definition |
|---|---|---|
| calere | Latin (lat) | |
| non | Latin (lat) | Not. |
| non- | Old French (fro) | |
| non | Old French (fro) | Not No. |
| chaloir | Old French (fro) | (impersonal, reflexive, se chaloir) to bother, to concern. To heat. |
| nonchaloir | Old French (fro) | Indifference; uncaringness To ignore; to pay little attention to. |
| nonchalant | French (fra) | Cool, relaxed. Marked by a lack of vivacity, vigour, liveliness; slow-moving; indolent. |