Etymology
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supervise (v.)
late 15c., "to look over" (implied in supervising), from Medieval Latin supervisus, past participle of supervidere "oversee, inspect," from Latin super "over" (see super-) + videre "to see" (from PIE root *weid- "to see"). Meaning "to oversee and superintend the work or performance of others" is attested from 1640s. Related: Supervised.
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kitchen (n.)

"room in which food is cooked, part of a building fitted out for cooking," c. 1200, from Old English cycene "kitchen," from Proto-Germanic *kokina (source also of Middle Dutch cökene, Old High German chuhhina, German Küche, Danish kjøkken), probably borrowed from Vulgar Latin *cocina (source also of French cuisine, Spanish cocina), a variant of Latin coquina "kitchen," from fem. of coquinus "of cooks," from coquus "cook," from coquere "to cook" (from PIE root *pekw- "to cook, ripen").

The Old English word might be directly from Vulgar Latin. Kitchen cabinet "informal but powerful set of advisers" is American English slang, 1832, originally in reference to President Andrew Jackson, whose intimate friends were supposed to have more influence with him than his official advisers. Kitchen midden (1863) in archaeology translates Danish kjøkken mødding. Surname Kitchener ("one employed in or supervising a (monastic) kitchen") is from early 14c.

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