from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. That cannot be proved or verified by any test
from The Century Dictionary and Cyclopedia
- Not capable of being proved, demonstrated, confirmed, or established. Also spelled unproveable.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. not provable
un- + provable (Wiktionary)