Unbelievable

Pronunciation

Origin

From - + believe + -.

Full definition of unbelievable

Adjective

1. Not to be believed.
2. Incredible; so surprising it is almost unable to believe.The most unbelievable thing happened to me today!This restaurant makes unbelievable pizza!
3. Implausible or improbable.His excuse seems rather unbelievable.

Synonyms

• (incredible): incredible
• (implausible): implausible, improbable, infeasible, unlikely

Antonyms

• (incredible): believable
• (implausible): feasible, likely, plausible, probable