sorrow (n.)youdaoicibaDictYouDict[sorrow 词源字典]
Old English sorg "grief, regret, trouble, care, pain, anxiety," from Proto-Germanic *sorg- (cognates: Old Saxon sorga, Old Norse sorg, Middle Dutch sorghe, Dutch zorg, Old High German soraga, German sorge, Gothic saurga), perhaps from PIE *swergh- "to worry, be sick" (cognates: Sanskrit surksati "cares for," Lithuanian sergu "to be sick," Old Church Slavonic sraga "sickness," Old Irish serg "sickness"). Not connected etymologically with sore (adj.) or sorry.[sorrow etymology, sorrow origin, 英语词源]
sorrow (v.)youdaoicibaDictYouDict
Old English sorgian, from sorg (see sorrow (n.)). Related: Sorrowed; sorrowing. Compare Dutch zorgen, German sorgen, Gothic saurgan.