caution

/ko.sjɔ̃/
1.
nounfeminine

security deposit (amount held as guarantee, e.g., for a rental)

J'espère que le proprio va me rendre ma caution après l'état des lieux.

I hope the landlord will give me back my security deposit after the inspection.

Synonyms:dépôt de garantie, garantie
2.
nounfeminine

guarantor; person who acts as surety for someone else's obligation

Mes parents se sont portés caution pour mon nouvel appart.

My parents acted as guarantors for my new apartment.

Synonyms:garant, cautionnaire