sait-on

does anyone know

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phrase Rare #30,150
does anyone know A formal or impersonal question form using inversion; depending on context, it can also mean “do we know?” or “does one know?”
FR: Sait-on quand le prochain train arrive ?
EN: Does anyone know when the next train arrives?

Que sait-on de lui?

What do we know about him?

Sait-on l’on va?

Do we know where we're going?

Pardon sait-on qui a fait ça?

Excuse me, do we know who did this?

— Insaisissables 3 (2025)

Comment le sait-on?

How do we know?

Que sait-on sur elle?

What do we know about her?

Comme sait-on qu'elle va venir jusqu'ici?

How do we know she's going to come all the way here?

Que sait-on sur lui?

What do we know about him?

Comment sait-on si l'on l'on est toujours la même personne?

How do we know whether we are still the same person?

— Perfect Blue (1998)

Que sait-on?

What do we know?

Quand sait-on que c'est fini?

How do you know when it’s over?

— Portrait de la jeune fille en feu (2019)