he understood
Il a compris la manière d'ouvrir la boîte.
He understood how to open the box.
I think he understood.
Assure-toi qu'il a compris, et laisse-le partir.
Make sure he understood, and let him go.
— Léon (1994)
Il a écrasé une larme sur la passerelle mais il a compris.
He brushed away a tear on the footbridge, but he understood.
— A Bad Son (1980)
I think he understood.