Synonyms for Very successful:

• adj.

  •best-selling (adjective)
  • number one,
  • smash,
  • bestselling,
  • HIT,
  • chart-topping,
  • smasher,
  • very popular.

• Other synonyms:

  •Other relevant words:
  • runaway.

Antonyms for Very successful:

• adj.

  • best-selling
    failing.