astonished, amazed
Je suis stupéfaite.
I’m astonished.
Mais je suis stupéfaite.
But I’m stunned.
— The Umbrellas of Cherbourg (1964)
Kat en resta stupéfaite.
Kat was stunned by it.
Elle était stupéfaite d'entendre la nouvelle.
She was stunned to hear the news.