insupportable
/ˌɪnsəˈpɔrtəbəl/
adjective
- So unpleasant, painful, or difficult that it cannot be tolerated or endured.
- She found his constant complaining insupportable after a while.
- The heat in the small room was insupportable, and everyone had to leave.
- The loss of her best friend was an insupportable grief.
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