secret d'État

state secret

→ secret
phrase Rare #45,246
state secret Can also refer more generally to a closely guarded secret. In “Ce n'est pas un secret d'État,” it means “It's no big secret.”
FR: Ne t'inquiète pas, ce n'est pas un secret d'État.
EN: Don't worry, it's no big secret.

La fabrication du papier est longtemps restée un secret d'État.

Papermaking remained a state secret for a long time.

C'est pas un secret d'État.

It's not a state secret.

— The Rip (2026)

Son costume est un secret d'État.

His costume is a state secret.

— Rebecca (1940)

Tout ceci est un grand secret d'État.

This is all a great state secret.

— Le Bras de diamant (1969)