unbelievable
un·be·lie·vable
adjective
1.
beyond belief or understanding
- “at incredible speed”
- “the book”
2.
having a probability to low to inspire belief
Origin
From un- + believable.
Related words
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.