underwrite (v.)youdaoicibaDictYouDict[underwrite 词源字典]
Old English underwritan "write at the foot of; subscribe;" see under + write (v.). A loan-translation of Latin subscribere (see subscribe). Used literally at first; modern sense of "to accept the risk of insurance" (1620s) is from notion of signing a marine insurance policy. Meaning "to support by a guarantee of money" is recorded from 1890.[underwrite etymology, underwrite origin, 英语词源]