coupon coupling • couponed · · · Info · Definitions · Synonyms · Characters · · coupon · · Text Latin · · Script 6 · · Length Definitions · · · (noun) a negotiable certificate that can be detached and redeemed as needed. Synonyms: voucher. · · Noun Definition 1 (noun) a test sample of some substance. · · Noun Definition 2 Synonyms · · · voucher · · Synonym 1 Characters · · c latin small letter c U+0063 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 u latin small letter u U+0075