couponing

[ koo-pon-ing, kyoo- ]
/ ˈku pɒn ɪŋ, ˈkyu- /

noun

the practice of distributing discount coupons to consumers as a form of product promotion.
the activity of seeking out or saving discount coupons to save money on food or household purchases.

Origin of couponing

First recorded in 1950–55; coupon + -ing1