From Longman Dictionary of Contemporary Englishmystery shopperˌmystery ˈshopper noun [countable] someone whose job is to visit different shops, pretending to be someone who is buying something, but who is really collecting information about what goods people buy and why they buy them. The information is used when planning how to sell a particular product.From Longman Business Dictionarymystery shopperˌmystery ˈshopperMARKETING someone whose job is to pretend to be a customer in order to find out how good a shop, service etc isWe set customer service objectives and measure performance through ‘mystery shoppers’. → shopper
