support, at someone’s expense (in vivre aux crochets de), hooks, fangs
Vivre aux crochets d'un autre, comme un vulgaire parasite.
To live off someone else, like a common parasite.
— Harry Potter à l'école des sorciers (2001)
Tu préférerais quand on vivait aux crochets de tes parents ?
Would you have preferred it when we were living off your parents?
— The Money Maker (2026)