A more thorough explanation:

Definition: Cas fortuit (kah for-twee) is a French term used in insurance to refer to an unforeseeable event or an inevitable accident. It is also known as a fortuitous event.

• A tree falling on your car during a storm is considered a cas fortuit.
• If a fire breaks out in your home due to faulty wiring, it is also considered a cas fortuit.

These examples illustrate the definition of cas fortuit as they both involve unexpected and uncontrollable events that could not have been predicted or prevented. In both cases, the policyholder would be covered by their insurance policy as long as they have the appropriate coverage.