Quid pro quo

"Quid pro quo" is a Latin phrase. It means roughly "this for that." In other words, the phrase describes the context when something is given in return for something else.^[1]

The phrase means the same thing as the English saying "a tit for a tat", or trading something for something else. It can also mean the same thing as "an eye for an eye".

Lawyers sometimes use this saying to mean "an even trade".