Detour
来自Big Physics
mid 18th century (as a noun): from French détour ‘change of direction’, from détourner ‘turn away’.
wiktionary
Borrowed from French détour, from détourner(“turn away”).
etymonline
detour (n.)
"a roundabout or circuitous way," 1738, from French détour, from Old French destor "side road, byway; evasion, excuse," from destorner "turn aside," from des- "aside" (see dis-) + tourner "to turn" (see turn (v.)). In 18c. usually figurative. Usually treated as a French word in English (with italics and the accent mark) until late 19c.
detour (v.)
1835, "make a detour" (intransitive); 1897, "send on a detour" (transitive), from detour (n.). Related: Detoured; detouring.