The definition of insufferable is intolerable, or is someone who is full of himself or extremely arrogant.
The definition of intolerable is something that is unbearable or not able to be endured.
That cannot be endured or tolerated
So unpleasant or painful as not to be endured or tolerated
Find another word for unsupportable. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for unsupportable, like: impossible, insufferable, insupportable, intolerable, unbearable, unendurable, unsufferable and pain.