de costas

on one’s back

→ de
phrase Uncommon #13,071
on one’s back Also used to mean with one’s back turned or facing away, depending on context.
PO: Ele caiu de costas na cama.
EN: He fell onto the bed on his back.

Quando garoto eu costumava deitar de costas na grama e olhar as nuvens brancas.

When I was a boy, I used to lie on my back in the grass and look at the white clouds.

Ela nada de costas melhor do que de frente.

She swims better with her back to the camera than with her front to the camera.

Quebrei o recorde da escola no nado de costas.

I broke the school record in the backstroke.

— Moonrise Kingdom (2012)

Tom e Mary dormem de costas.

Tom and Mary sleep back to back.

Eu troquei as taças quando te virou de costas.

I switched the glasses when he turned his back on you.

— A Princesa Prometida (1987)

Vou ficar de costas enquanto você se veste.

I’ll turn around while you get dressed.

Tom ficou de costas para o prédio.

Tom turned his back to the building.

Ele sabe nadar de costas.

He knows how to swim on his back.

Tom se deitou de costas.

Tom lay down on his back.

E a próxima coisa que acontece estará de costas.

And the next thing that happens, you'll be facing away from me.

— Shrek (2001)

Está de costas.

His back is turned.

— Malcolm X (1992)

Ele se deitou de costas.

He lay down on his back.

Tom estava de costas para o prédio.

Tom had his back to the building.

Está bem, deixe que ele nos escute, mas vamos virá-lo de costas.

Okay, let him listen to us, but let's turn him around.

— Ирония судьбы, или С легким паром! (1976)

Ela virou-se de costas para Tom.

She turned her back to Tom.

De costas, parece uma menina.

From behind, she looks like a little girl.

— O Ódio (1995)

Mas eu também ronco quando durmo de costas.

But I also snore when I sleep on my back.

— Moscou Não Acredita em Lágrimas (1980)

Vou virar de costas.

I'm going to turn my back.

— Tudo Sobre Minha Mãe (1999)

Vire de costas.

Turn around.

— O Profeta (2009)

Vira de costas, porra!

Turn around, for fuck’s sake!

— Tropa de Elite (2007)

Não te disse para nunca te sentar de costas para a porta?

Didn't I tell you never to sit with your back to the door?

— Malcolm X (1992)

Vire-se de costas.

Turn your back.

Tá vendo ele aqui de costas?

Do you see him here with his back turned?

— O Auto da Compadecida (2000)

Ele estava deitado de costas?

Was he lying on his back?

De costas.

Back turned.

— Pillion (2025)

Vira de costas.

Turn your back.

— O Espelho (1975)

Não fique de costas para a porta.

Don't stand with your back to the door.

— Duna (2021)