1) (a) repayment; to pay back (money) (refund)
2) to pay back (money) (to a person) (reimburse)
3) to pay back (money); to give something to (a person) in return (repay)
to give (something); to present, send in, (an account for payment)
contribute
to pay back (money); to give something to (a person) in return
give back money or possession
to return the same sort of bad treatment that one has received
get even with someone
