Accident
1) An unusual, fortuitous, unexpected or unforeseen event or occurrence.
2) A mishap that is not expected or designed.

Act of God
A direct, violent sudden act of nature that could not have been foreseen, and its effect could not have been prevented, e.g., flood, earthquake.

Actual Cash Value
The fair market value of property taking into account factors that might augment or reduce the value of the property in question.

All Risk Policy
A name given to an insurance policy which covers against the loss caused by all perils except those which are specifically excluded by the terms of the policy.