1579, "affinity between certain things," from M.Fr.
sympathie, from L.L.
sympathia "community of feeling, sympathy," from Gk.
sympatheia, from
sympathes "having a fellow feeling, affected by like feelings," from
syn- "together" +
pathos "feeling" (see
pathos). In Eng., almost a magical notion at first; e.g. in ref. to medicines that heal wounds when applied to a cloth stained with blood from the wound. Meaning "conformity of feelings" is from 1596; sense of "fellow feeling" is first attested 1662.
Sympathize "to have fellow-feeling" is recorded from 1605.
Sympathetic "sharing the feelings of another" is from 1718. In anatomical sense, the word is attested from 1769, from Mod.L.
(nervus) sympathicus, coined by Jacques-Benigne Winslow (1669-1760), Danish anatomist living in Paris.