Conveys strong negative feelings; often used to describe extreme discomfort or dissatisfaction. The heat in the desert was intolerable, sapping everyone's strength.
Pro Tip 2/3
Subjective Experience
'Intolerable' varies per person, what is unbearable for one might be manageable for another. I find her attitude intolerable, but you might not mind it.
Pro Tip 3/3
Not Always Literal
Sometimes used hyperbolically for emphasis, not necessarily meaning something is literally unbearable. Waiting another day for the results is just intolerable!