A favor done for someone in exchange for a favor in return. This Latin phrase means "something for something." You wash my car, and I'll drop off your dry cleaning—quid pro quo.Our company has a specific policy against quid pro quo, to prevent unfair treatment and harassment.
An equal exchange or substitution, as in I think it should be quid pro quo-you mow the lawn and I'll take you to the movies. This Latin expression, meaning "something for something," has been used in English since the late 1500s.