frustration of purpose
- A situation in which unexpected events make it impossible to fulfill the terms of a contract, thus allowing the affected party to cancel the contract without facing penalties
- After the city declared the building unsafe, the frustration of purpose let the buyer cancel the purchase.
- Because of the unanticipated zoning changes, the land couldn't be developed and frustration of purpose allowed the developer to withdraw from the purchase contract.
- Due to an unforeseen ban on the product, the retailer cited frustration of purpose to rescind the contract with the supplier.