prenup (n.)youdaoicibaDictYouDict[prenup 词源字典]
by 1988 as a shortening of prenuptial agreement (see prenuptial).[prenup etymology, prenup origin, 英语词源]
prenuptial (adj.)youdaoicibaDictYouDict
1826, from pre- + nuptial. Prenuptial agreement first recorded 1833.