debtor (n.)youdaoicibaDictYouDict[debtor 词源字典]
early 13c., dettur, dettour, from Old French detour, from Latin debitor "a debter," from past participle stem of debere; see debt. The -b- was restored in later French, and in English c. 1560-c. 1660. The KJV has detter three times, debter three times, debtor twice and debtour once.[debtor etymology, debtor origin, 英语词源]