dar marcha atrás

to reverse; to back up

→ dar
phrase Rare #37,809
to reverse; to back up Used literally for moving a vehicle backward and figuratively for changing one's mind or abandoning a decision.
SP: Mira por el retrovisor antes de dar marcha atrás.
EN: Look in the rearview mirror before backing up.

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.

Tom no va dar marcha atrás.

Tom isn’t going to back down.

El camión casi atropelló al niño al dar marcha atrás.

The truck almost ran over the child as it reversed.