The Latin phrase quid pro quo means literally something for something and the English meaning is the same. It can be applied to a substitution, where one thing is replaced by something similar, or at least ostensibly similar, honestly or fraudulently.[3] It can also be applied more broadly, covering almost any transaction, such as the exchange of money for goods or services. It stands in contrast to a donation, where something is given without any expectation of something in return.

In 1654, the expression quid pro quo was used to generally refer to something done for personal gain or with the expectation of reciprocity in the text The Reign of King Charles: An History Disposed into Annalls, with a somewhat positive connotation. It refers to the covenant with Christ as something "that prove not a nudum pactum, a naked contract, without quid pro quo." Believers in Christ have to do their part in return, namely "foresake the devil and all his works".[4]




6. Quid Pro Woe