Return (money) – rembourser

(Pronounced rhom-boo-say)

She was not going to return the money she took following their romp after a boozy (rembourser) night out.

NOTE: There are five different French words that mean "return": revenir, retourner, rentrer. rendre and rembourser.
Which one you need depends on what or where you are returning. The French use rembourser to mean returning money. For example, this translation for return would be used if you wanted to say "Did you return the money your parents lent you?"