to get (something) out of someone, to wheedle, to extort
Tu vas le flatter et lui soutirer autant d'or que tu peux.
You’re going to flatter him and get as much gold out of him as you can.
— Le Voyage de Chihiro (2001)
Une amie m'a dit comment soutirer des pourboires à ces types.
A friend told me how to squeeze tips out of these guys.
— Running Man (2025)
Comme ils sont riches, leur soutirer de l'argent ne leur manquerait pas.
Since they’re rich, they wouldn’t miss the money if we took it from them.
— Lady Vengeance (2005)
Ils ont essayé de me soutirer plus d'argent.
They tried to extort more money from me.
Mais comment tu vas faire pour soutirer ton litre ?
But how are you going to siphon off your liter?
— Le Salaire de la peur (1953)