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1 a : the act of frustrating
b : the state or an instance of being frustrated
c : something that frustrates
2 : a common-law doctrine of contract law: parties to a contract may be excused from performance even though performance is still possible if the reason for making the contract is partially or completely frustrated by a fortuitous event or by circumstances which are not the fault of either party called also frustration of purpose frustration of the venture compare cause, force majeure clause, impossibility, impracticability NOTE: In order for frustration to be used as a successful defense to a breach of contract claim, the reason for making the contract must have been contemplated or recognized by both the contracting parties even though it was not expressed in the contract.
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.