Most common:
* Quarantaine: This is the most common and direct translation of "quarantine." It refers to a period of isolation, usually for health reasons.
Other options:
* Confinement: This word translates more directly as "confinement" and is often used in the context of mandatory isolation imposed by the government, like during a pandemic.
* Isolement: This means "isolation" and is used in a broader sense to refer to any period of separation from others.
* Mise en quarantaine: This phrase translates to "quarantine" and is used more formally.
The best choice for you will depend on the specific situation you're trying to describe.