adjective

unbelievable

Difficult to believe or extraordinarily impressive.

The team makes an unbelievable comeback in the final minute.

Etymology

The parts mean not capable of being believed. Exaggerated praise extends that improbability to something astonishingly impressive.

More examples

  • His excuse sounds unbelievable, even to his closest friends.
  • It's unbelievable that the repair costs more than the car.
  • The view from the mountaintop is unbelievable.

Forms

unbelievable

unbelievably adverb — To an extraordinary or hard-to-believe degree.

Similar words

incredible
Often expresses amazement rather than serious doubt about truth.
implausible
Questions whether something is likely, without suggesting anything impressive.
astonishing
Emphasizes surprise or amazement rather than difficulty believing something.