best-selling

• bestselling (UK, Commonwealth, International)

best-selling

1. In marketing, highly popular with consumers purchasing goods within a specific class.

In marketing, the phrase "best-selling" is frequently used as a stand in for directly asserting the quality of the good; because of the value of such a designation, marketers often invent a class with narrow characteristics in order to describe a product as the best-selling in its class, even though other products with subtle differences may achieve far greater sales.