Quid pro quo
Quid pro quo (Latin: "something for something") is a Latin phrase used in English to mean an exchange of goods or services, in which one transfer is contingent upon the other; "a favor for a favor". Phrases with similar meanings include: "give and take", " tit for tat ", "you scratch my back, and I'll scratch yours", "this for that," and "one hand washes the other". Other languages use do ut des to express a reciprocal exchange, which aligns with the Latin meaning, whereas the widespread use of quid pro quo in English for this concept arose from a "misunderstanding".
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