noun
paladin; chivalrous person; knight-errant
Literary or historical term for a person of righteous chivalry, akin to a paladin or knight-errant. Not used in everyday conversation.
彼はまるで中世の義侠の士のような生き方をしている。
He lives like a medieval paladin.
義人 means a righteous person in a moral sense, but lacks the knightly or chivalric connotation of 義侠の士.
Compound of 義侠 (chivalry, righteousness) and 士 (gentleman, warrior). The exact historical derivation is uncertain; it is a literary term likely influenced by Chinese classics.