nieprzewidziany wypadek in inglese:

Prepare contingency plans in case we fail.

Do we have a contingency plan? They are prepared for every possible contingency.

contingency plan

A good fighter should be prepared for every contingency.

It is also our duty to take the necessary contingency measures with respect to our assistance.

The move is the latest sign of multinational companies taking contingency actions because of concerns about the fallout from Brexit.

There is neither contingency nor free will.