unbearable

more unbearable

plus insupportable

Unbearable heat

Chaleur insupportable

it is unbearable

il est insupportable

"Unbearable! Yes!"

-- Insupportable! c’est vrai.

Is the pain unbearable?

La douleur est insupportable?

It is unbearable to you

Il est insupportable avec vous

The cost is unbearable.

Les coûts sont insoutenables.

The stench there is unbearable.

L' odeur y est intolérable.