违背 (wéi bèi): to go against; to be contrary to; to violate

He was taken to court by the company because he violated the confidentiality clause in the contract.

As a doctor, if you violate professional ethics and accept red envelopes, you will lose the trust of patients.

He promised to help me keep the secret, but he broke his word and told someone about it.

In some countries, choosing your own career against your parents' wishes is a very difficult thing to do.

The government warned that any act violating international conventions will be severely sanctioned.