voucher Synonyms

coupon warrantor warrantee warrant verifier token ticket testimonial testifier testamur swearer stub slip shingles sheepskin release witness sight draft credentials premium certificate credit slip box top detachable portion tickets coupons sales slip proof of purchase letter of credence character reference carnet IOU promissory note cash card letter of credit record receipt acknowledgment counterfoil compurgator cojuror chit certifier certification certificate card bon bill avoucher authorization attester