How to Use "vitiate" with Example Sentences

1. No such variation shall vitiate or invalidate this contract .
2. As can be seen , a brilliant benchmarking study might be able to determine the various sorts of matrices for payouts , but it might vitiate the notion of a fulsome inspirational exercise .
3. That will largely vitiate any notion of the eu at last speaking with one voice , or of answering the famously mythical kissinger question about whom to call when an outsider wants to talk to europe .