Contravene (verb)

1. To go against or violate (a law, rule, etc.).
2. To act in opposition to; to oppose or contradict.
3. To infringe or violate (a right, agreement, etc.).

Origin:

From the latin contravenire meaning "to come against".

Examples:

1. He was found guilty of contravening the city's bylaws.
2. The new law contravenes the Constitution.
3. The company's actions contravened the terms of the contract.
4. His statements contravened the official policy.
5. The company was found to have contravened the competition laws.