sympathyyoudaoicibaDictYouDict[sympathy 词源字典]
sympathy: [16] Sympathy is etymologically ‘feeling with’ someone else. The word comes via Latin sympathīa from Greek sumpátheia, a derivative of sumpathés ‘feeling with or similarly to someone else’. This was a compound adjective formed from the prefix sun- ‘together, with, like’ and páthos ‘feeling’ (source of English pathetic [16], pathology [17], pathos [17], etc).
=> pathetic, pathology, pathos[sympathy etymology, sympathy origin, 英语词源]
sympathy (n.)youdaoicibaDictYouDict
1570s, "affinity between certain things," from Middle French sympathie (16c.) and directly from Late Latin sympathia "community of feeling, sympathy," from Greek sympatheia "fellow-feeling, community of feeling," from sympathes "having a fellow feeling, affected by like feelings," from assimilated form of syn- "together" (see syn-) + pathos "feeling" (see pathos).

In English, almost a magical notion at first; used in reference to medicines that heal wounds when applied to a cloth stained with blood from the wound. Meaning "conformity of feelings" is from 1590s; sense of "fellow feeling, compassion" is first attested c. 1600. An Old English loan-translation of sympathy was efensargung.