Chez

google

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mid 18th century: French, from Old French chiese, from Latin casa ‘cottage’.

wiktionary

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Borrowed from French chez. Doublet of casa.

etymonline

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chez (prep.)

1740, from French chez "at the house of," from Old French chiese "house" (12c.), from Latin casa "house." Used with French personal names, meaning "house of _____."