- voucher, verifier - someone who vouches for another or for the correctness of a statement
--1 is a kind of supporter, protagonist, champion, admirer, booster, friend
Derived forms: verb vouch2, verb vouch1 - voucher - a document that serves as evidence of some expenditure
--2 is a kind of document, written document, papers
- coupon, voucher - a negotiable certificate that can be detached and redeemed as needed
--3 is a kind of commercial document, commercial instrument
--3 has particulars: book token; meal ticket, luncheon voucher; twofer - coupon, voucher - a negotiable certificate that can be detached and redeemed as needed