IPA: /ɪnˈsʌfərəbl/
KK: /ɪnˈsʌfərəbəl/
Something that is very difficult or impossible to tolerate or bear.
His insufferable arrogance made it hard for anyone to work with him.
Comparative: more insufferable
Superlative: most insufferable
Insufferable is formed from "in-" (meaning not) and "sufferare" (meaning to bear or endure). The word describes something that cannot be endured or tolerated.
Think of 'not' being able to 'bear' something — that's why insufferable means something that is unbearable.