GIVE ANSWERS - English

From https://en.wikipedia.org/wiki/Force_majeure:

Force majeure is a common clause in contracts that essentially frees both parties from liability or obligation when an extraordinary event or circumstance beyond the control of the parties .. prevents one or both parties from fulfilling their obligations under the contract.

In practice, most force majeure clauses do not excuse a party's non-performance entirely, but only suspend it for the duration of the force majeure.

So I believe it can be translated as "unavoidable circumstance", "event beyond control", but checking online dictionary (e.g. Wordreference.com)    I found that there is no translation in english of this expression.

 

There are many many French expressions in English. A la this one. Used a lot in legal works, contracts. It suggests events beyond your control and your are not liable

The expression "as the last result" can be used to say "en cas de force majeure" in English. E.g: We can sell our house and move into a small apartment as the last result.