Intolerable (adjective)

Unable to be endured or accepted; unbearable.

Origin:

From in- meaning "not" + tolerable meaning "able to be tolerated".

Examples:

1. The pain was intolerable and she had to take medication.
2. The heat was intolerable and everyone was looking for a way to cool down.
3. The noise level was intolerable and the concert had to be stopped.
4. The situation was intolerable and something had to be done.
5. The service was intolerable and the customer decided not to return.