Quick definitions from WordNet (pay back)
▸ verb: take vengeance on or get even
▸ verb: act or give recompensation in recognition of someone's behavior or actions
▸ Also see pay_backs
▸ Words similar to pay back
▸ Usage examples for pay back
▸ Words that often appear near pay back
▸ Rhymes of pay back
▸ Invented words related to pay back
▸ verb: take vengeance on or get even
▸ verb: act or give recompensation in recognition of someone's behavior or actions
▸ Also see pay_backs
▸ Words similar to pay back
▸ Usage examples for pay back
▸ Words that often appear near pay back
▸ Rhymes of pay back
▸ Invented words related to pay back