inviolable (adj.)youdaoicibaDictYouDict[inviolable 词源字典]
mid-15c., from Latin inviolabilis "inviolable, invulnerable," from in- "not, opposite of" (see in- (1)) + violabilis, from violare "to do violence to" (see violation). Related: Inviolably.[inviolable etymology, inviolable origin, 英语词源]