A person who gives a bribe.

a person who negotiates or arranges the giving or receiving of a bribe or bribes, or who acts as an intermediary in this; cf. bribe broker n.

A person who suborns a person or thing. Also figurative.

A person (or thing personified) who gives, offers, or promises a bribe.

a person who negotiates or arranges the giving or receiving of a bribe or bribes, or who acts as an intermediary in this.

One guilty of bribery or ‘corrupt practices’.

A person who offers or accepts bribes in public life, or who misappropriates or improperly benefits from public funds; a corrupt politician or…

One who systematically gives ‘tips’ or gratuities: see tipper, n.1 4.

colloquial. British. A person who secures support by unfair or underhand methods, esp. one who bribes or intimidates a jury.