impossibility of performance
- A principle in contract law that allows a party to be free from liability for breaking a contract when an obligation can't be fulfilled due to circumstances beyond control, such as death or the failure of a delivery method
- The contract was nullified due to the impossibility of performance because of a major equipment malfunction.
- Despite their best efforts, the company had to invoke the clause of impossibility of performance when an important shipment was lost at sea.
- The sudden, unexpected ordinance changes caused an impossibility of performance in their contract with the city council.