bestseller

/ˌbɛstˈsɛlər/
noun
  1. A product, especially a book, that has sold in very large numbers.
    • He dreamed of writing a bestseller that would make him famous.
    • The store had a special display for all the year's bestsellers.
    • Her new novel became an instant bestseller, topping charts worldwide.
Antonyms
What does "bestseller" mean? | whatsthatwordmean | whatsthatwordmean