contravene - definition and synonyms

verb [transitive] formal 

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/ˌkɒntrəˈviːn/
present tense
I/you/we/theycontravene
he/she/itcontravenes
present participlecontravening
past tensecontravened
past participlecontravened
  1. to do something that is not allowed by a rule, law, or agreement