in order not to
Estaban hablando en voz baja para no despertar al bebé.
They were speaking in low voices so as not to wake the baby.
Vayamos deprisa para no perder el tiempo.
Let's hurry so we don't waste time.
Tom fingió estar enfermo para no tener que ir a la escuela.
Tom pretended to be sick so he wouldn’t have to go to school.
¿Que Rita se mató para no cuidarme?
That Rita killed herself so she wouldn’t have to look after me?
— Elena sabe (2023)
Es mejor no esperar para no perder la idea.
It is better not to wait, so as not to lose the idea.
— Taxi (1998)
Sorda debes estar para no escuchar el corazón de tu hijo.
You must be deaf not to hear your son's heart.
— Devdas (2002)
Me mordí los labios para no demostrar que reconocía lo que estaba viendo.
I bit my lip so I wouldn’t show that I recognized what I was seeing.