il sut

knew, found out

s y → savoir
su to know + t 3rd-person singular simple past (il/elle/on)
verb · 3rd-person singular, past tense Rare #44,648
knew, found out This is the passé simple form of savoir, used mainly in written narratives.
FR: Il sut tout de suite qu'elle avait raison.
EN: He knew right away that she was right.
Conjugation of savoir
Indicative past
SingularPlural
First sus —
Second sus —
Third sut —

Et le soir on sut qu'il avait été convoqué par le commandant.

And that evening, we learned that he had been summoned by the commander.

Maria fut enchantée quand elle sut les résultats des élections.

Maria was delighted when she heard the election results.

Personne ne le sut.

Nobody knew.

Personne ne sut jamais où était la broche.

No one ever knew where the brooch was.

— Nang Nak (1999)

D'un seul regard il sut que l'enfant avait faim.

With a single glance, he knew that the child was hungry.

Tellement la question était difficile que nul ne sut répondre.

The question was so difficult that no one could answer it.

Sounds similar to