sperate (adj.)youdaoicibaDictYouDict[sperate 词源字典]
of debts, "having some likelihood of recovery," 1550s, from Latin speratus, past participle of sperare "to hope," denominative of spes "hope," from PIE *spe-is-, from root spe- (1) "to thrive, prosper" (see speed (n.)).[sperate etymology, sperate origin, 英语词源]