prosit (interj.)youdaoicibaDictYouDict[prosit 词源字典]
1846, toast or expression wishing good health (from 16c., famously a drinking pledge by German students), Latin, literally "may it advantage (you)," third person singular present subjunctive of prodesse "to do good, be profitable" (see proud).[prosit etymology, prosit origin, 英语词源]