IdiomDaily LifeEnglish

do someone a good turn

Meaning: To do someone a favor without having been asked and without expecting a favor in return.

Example: “The stranger who fixed our flat tire really did us a good turn.”

Origin: "Turn" carried the sense of a deliberate act of goodwill or service in English as far back as Chaucer, who has "hadde I nat doon a freendes torn to thee?" around 1386 — a friend's turn, meaning a favor done in friendship. A 15th-century text pairs the idea with its opposite just as naturally: "I have yet in my mind a little good turn that thou did me," alongside "thou hast done me an ill turn," showing "turn" working equally well for harm as for help depending on which adjective it's paired with. John Heywood's 1546 proverb collection fixes the now-standard reciprocal version, "one good turn asks another," the ancestor of the modern "one good turn deserves another."

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