The word "rebater" can be defined as someone who makes or gives a discount on goods or services. Synonyms for this word include bargain hunter, negotiator, discounter, or deal maker. Another synonymous term is a "couponer" or "coupon collector," as this individual often uses coupons to receive discounts on their purchases. Other terms that could be used include "price slasher," "discount queen," "saver," or "price cutter." All of these words refer to someone who is skilled in finding the best deals on products or services and is confident in their ability to negotiate or obtain discounts. Overall, these synonyms highlight the importance of finding ways to save money on purchases.