Focus on the pronunciation of best-seller
English definition of “best-seller”
best-seller (also bestseller)
/ˈbestˈsel·ər/ n [C]
› a new book or other product that has sold a great number of copies best-selling (also bestselling)
/ˈbestˈsel·ɪŋ/ adj [not gradable] › Released in February 2000, it is the best-selling computer game ever.