voucher
noun
1. someone who vouches for another or for the correctness of a statement
Similar word(s): verifier
Definition categories: person, admirer, booster, champion, friend, protagonist, supporter
2. a document that serves as evidence of some expenditure
Definition categories: communication, document, papers
3. a negotiable certificate that can be detached and redeemed as needed
Similar word(s): coupon
Definition categories: communication
verb
1. (transitive) To establish the authenticity of; to vouch for.
2. (transitive) To provide a vouch for (an expenditure).
3. (transitive) To provide (a beneficiary) with a voucher.