de marbre

unmoved

→ de
phrase Rare #46,224
unmoved Used figuratively to describe someone who shows no emotion or does not react, as in rester de marbre or un visage de marbre.
FR: Elle est restée de marbre face à cette nouvelle.
EN: She remained unmoved by the news.

Avec sa tête de marbre, il fait ainsi.

With his marble head, he does so.

Et tu restes de marbre?

And you’re still unmoved?

— Mystic River (2003)

Alors, visage de marbre.

Well, keep a straight face.

— Des hommes d'honneur (1992)