- countermand (v.)
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[countermand 词源字典] - early 15c., from Old French contremander "reverse an order or command" (13c.), from contre- "against" (see contra-) + mander, from Latin mandare "to order" (see mandate (n.)). Related: Countermanded; countermanding.
[countermand etymology, countermand origin, 英语词源]