quid pro quo
/ˌkwɪd.pɹəʊˈkwəʊ/noun
University
1
Something which is understood as something else; an equivocation.
2
Substitution of one drug for another.
3
Something which is offered or asked for in exchange for something else.
4
A usually non-monetary exchange transaction, or series or process of exchange transactions.
5
An equal or fair transaction or series of process of exchange transactions; tit for tat.
6
Sexual harassment in which a person in a workplace implicitly or explicitly requires sexual favours in exchange for something.