- The definition of unbearable is something that cannot be tolerated.
One hundred degree heat that makes you miserable and that you cannot tolerate without getting dizzy is an example of unbearable heat.
This woman finds the heat unbearable.
unbearable definition by Webster's New World
unbearable definition by American Heritage Dictionary
- un·bearˈa·ble·ness noun
- un·bearˈa·bly adverb