dans son dos

behind his back

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phrase Rare #32,768
behind his back Used when someone does or says something without another person knowing. It can also mean “in his back” literally, for example when describing pain.
FR: Elle a organisé une fête dans son dos.
EN: She organized a party behind his back.

On le surnomme "Stups" dans son dos.

They call him “Stups” behind his back.

— Presque Célèbre (2000)

Toi aussi tu parlais dans son dos.

You were talking behind his back too.

— Silent Voice (2016)

Dans son dos, bien sûr.

Behind his back, of course.

— Romance de bureau (1977)

Il sentit une douleur dans son dos.

He felt a pain in his back.

J'ai acheté le sénat dans son dos.

I bought the Senate behind his back.

Regarde ce qu'y a écrit dans son dos.

Look at what’s written on his back.

— L'Histoire personnelle de David Copperfield (2019)

Dans son dos.

Behind his back.

— Wake Up Dead Man : Une histoire à couteaux tirés (2025)

Il a enfoncé le couteau dans son dos.

He plunged the knife into his back.

Les filles parlaient dans son dos aussi !

The girls were talking behind his back too!

— Silent Voice (2016)

Il ressentait une douleur intense dans son dos et ses jambes.

He felt intense pain in his back and legs.