correspondent
adj.
early 15c., "having an analogous relationship" (to), a sense taken up since 19c. by corresponding; from Medieval Latin correspondentem, present participle of correspondere (see correspond).
n.
"one who communicates with another by letters," 1620s, from correspondent, adj.. The newspaper sense is from 1711.
THE life of a newspaper correspondent, as may naturally be supposed, is one of alternate cloud and sunshine--one day basking in an Andalusian balcony, playing a rubber at the club on the off-nights of the Opera, being very musical when the handsome Prima Donna sings, and very light fantastic toeish when the lively Prima Ballerina dances; another day roughing it over the Balkan, amid sleet and snow, or starving at the tail of an ill-conditioned army, and receiving bullets instead of billets-doux. ["New Monthly Magazine," vol. 95, 1852, p.284]
〔李〕[correspond v. 通信；-ent ⇒“one that corresponds通信者”→] n. one who exchanges letters with another通信者