commandment (n.)youdaoicibaDictYouDict[commandment 词源字典]
late 13c., "an order from an authority," from Old French comandement "order, command," from Latin *commandamentum, from *commandare (see command (v.)). Pronounced as four syllables until 17c.
Of þe x commandements ... þe first comondement is þis, O God we ssul honuri [c. 1280]
[commandment etymology, commandment origin, 英语词源]