The story
- French · borrowed fromau pair
- French · borrowed fromau pair
- English todayau pair
Borrowed from French au pair.
First known use, by meaning
- from 19th c. On a working basis by which work done by one party is rewarded by benefits (especially board and lodging) rather than by monetary remuneration.
- from 19th c. An au pair working arrangement (see Adverb).
- from 20th c. A person (especially a young woman) working in such a way; now specifically, a foreign worker who helps a host family with childcare, housework, or both while staying as a guest with a host family, and generally receives a small allowance (or pocket money).
Etymology from Wiktionary, CC BY-SA 4.0.