from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. So unpleasant, distasteful, or painful as to be intolerable: unbearable heat.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. so unpleasant or painful as to be unendurable
from The Century Dictionary and Cyclopedia
- Not to be borne or endured; intolerable.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. incapable of being put up with
un- + bearable. (Wiktionary)