severeyoudaoicibaDictYouDict[severe 词源字典]
severe: [16] Severe is a descendant, via Old French severe, of Latin sevērus, a word of uncertain origin. English asseveration ‘firm declaration’ [16] comes from its Latin derivative asseverāre ‘assert earnestly’.
=> asseveration[severe etymology, severe origin, 英语词源]
severe (adj.)youdaoicibaDictYouDict
1540s, from Middle French severe (12c., Modern French sévère) or directly from Latin severus "serious, grave, strict, austere" (see severity). From 1660s with reference to styles or tastes; from 1725 of diseases.