Also means
to summon
Usage Note
Sommer is a formal verb meaning to officially demand or command someone to do something — sommer quelqu'un de partir (to order someone to leave). It appears frequently in legal and military contexts. Unlike demander (to ask) or ordonner (to order/command), sommer implies a formal ultimatum with implicit consequences for non-compliance.
Examples
"Il l'a sommé de quitter les lieux immédiatement."
Natural Translation
He ordered him to leave the premises immediately.

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