Example Sentences:

Ramayana:  When Kaikeyi kept insisting that Rama be exiled immediately, Dasharatha found her behavior so insufferable that he rejected her as his wife.

Mahabharata:  When Duryodhana criticized Drona for being too soft in fighting with the Kauravas, Drona lamented the fate because of which he had to fight on the side of this insufferable prince.

Bhagavad-gita:  Even if ungodly people act in ways that are insufferable, godly people are still hesitant to criticize them.