1. to act in opposition to or violate (a law, rule, or principle)
Usage: third person singular present tense of ‘contravene’

Examples

• The new policy contravenes federal regulations.
• His behavior contravenes the school’s code of conduct.
• The company’s actions contravene environmental protection laws.
• This decision contravenes our basic principles of fairness.
• The proposal contravenes the terms of the original agreement.
• Her statement contravenes everything she said yesterday.