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Sample sentences for the GRE study word invalidate

1. invalidate, annul, quash, void, avoid, nullify -- (declare invalid; "The contract was annulled"; "void a plea")
2. cancel, invalidate -- (make invalid for use; "cancel cheques or tickets")
3. invalidate, nullify -- (show to be invalid)
4. invalidate, void, vitiate -- (take away the legal force of or render ineffective; "invalidate a contract")