is out of the question

A trip to America is out of the question.

Un voyage en Amérique est hors de question.

Doing that is out of the question.

C'est hors de question.

Without a passport, leaving a country is out of the question.

Sans passeport, quitter un pays est impossible.

Going out in this rain is out of the question.

Sortir sous cette pluie est hors de question.

His proposal is out of the question.

Sa proposition est hors de question.

Granting that favor is out of the question.

Accorder cette faveur est hors de question.

Crying is out of the question.

Pleurer est hors de question.

— Wings of Desire (1987)

A holiday this summer is out of the question.

Des vacances cet été, c'est hors de question.

Living without water is out of the question.

Vivre sans eau est impensable.