incredible
in-cred-i-ble
adjective
Extremely good, impressive, or astonishing; causing great wonder.
"The view from the mountain was incredible."
adjective
Impossible or very difficult to believe; highly improbable.
"His story sounded completely incredible."
Thesaurus
Synonyms: astounding, undreamed, undreamed of, unbelievable, marvellous, marvelous, tall, undreamt of, unimagined, improbable, dumbfounding, fabulous
Antonyms: believable, credible