dar marcha atrás

to back up

→ dar
phrase Rare #37,804
to back up Used for moving a vehicle backward and figuratively for reversing a decision or position.
SP: Mira por el retrovisor antes de dar marcha atrás.
EN: Look in the rearview mirror before backing up.

Tom no va dar marcha atrás.

Tom isn’t going to back down.

Bien, ahora que estás aquí, no podemos dar marcha atrás.

Well, now that you're here, there's no going back.

— Carandiru (2003)

Mira por el retrovisor antes de dar marcha atrás.

Check your rearview mirror before reversing.

El camión casi atropelló al niño al dar marcha atrás.

The truck almost ran over the child as it reversed.