payment - a sum of money paid

hush money - a bribe paid to someone to insure that something is kept secret

kickback - a commercial bribe paid by a seller to a purchasing agent in order to induce the agent to enter into the transaction

payola - a bribe given to a disc jockey to induce him to promote a particular record

soap - money offered as a bribe

crime, law-breaking - (criminal law) an act punishable by law; usually considered an evil act; "a long record of crimes"

pay - give money, usually in exchange for goods or services; "I paid four dollars for this sandwich"; "Pay the waitress, please"

sop - give a conciliatory gift or bribe to

buy off, pay off - pay someone with influence in order to receive a favor