IPA: /ɪnˈtɒlərəblnəs/
KK: /ɪnˈtɑːlərəblnəs/
The condition of being unable to be tolerated or endured; something that is very difficult to accept or bear.
The intolerableness of the situation made it hard for anyone to stay calm.
Intolerableness → It is formed from "in-" (meaning not), "tolerare" (meaning to bear or endure), and "-ness" (meaning the state of being). The word describes the state of being unable to bear or endure something.
Think of 'not' ('in-') being able to 'bear' ('tolerare') something, which helps you remember that 'intolerableness' refers to the state of being unable to endure.