¿por qué no

listen to the pronunciation of ¿por qué no
Spanisch - Englisch
why not

Why not apologize and ask for his pardon? - ¿Por qué no te disculpas y pides perdón?

Since you don't have anything to do, why not come fishing with me this weekend? - Si no tienes nada que hacer, ¿Por qué no vienes conmigo a pescar este fin de semana?

Used to state that one has no objection to and approves of a proposal

Let's have pizza for lunch. — Yes, why not?.

Why is that not true?

I don't want to go out today. — Why not?.

Used to introduce a proposal

Why not try turning the handle in the other direction to see if that opens the window?.