endorser

Technically, an endorser is anyone who signs the back of a financial instrument. In lending, the term is used as functional equivalent of a guarantor. A loan endorser usually signs a guaranty agreement included on the promissory note form, often on the back. American Banker Glossary

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endorser en‧dors‧er [ɪnˈdɔːsə ǁ -ər] noun [countable]

1. BANKING someone who endorses a document, for example a document showing ownership, a bill of exchange or a promissory note:

• If the original payee cannot pay at maturity, the final holder can approach the last endorser for payment, who in turn can claim from the previous endorser, etc.

2. MARKETING a well-known person who endorses a product in an advertisement:

• It's very typical for an advertisement for hair colouring to feature a celebrity endorser.

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endorser UK US /ɪnˈdɔːsə^r/ noun [C]

► MARKETING someone, especially a well-known person, who appears in an advertisement saying that they use and like a particular product: »

The footballer is the company's first male celebrity endorser.

► someone who makes a public statement saying that they support someone or something: »

The senator is the most recent of his candidacy endorsers.

endorser of sth »

High-profile endorsers of the campaign include the Foreign Secretary and the chairman of the National Farmers Union.

► BANKING the person who signs the back of a cheque, bill of exchange, etc. written out to them in order to give permission for it to be paid to someone else: »

If a note has been endorsed, never agree to an extension of time without getting the written consent of the endorser.