Simple past tense and past participle of contravene.(verb)
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Use "contravened" in a sentence
"The following day, the Security Council President issued a press statement declaring the Iraqi decision "totally unacceptable," noting that it "contravened" relevant Security Council resolutions."
"England, and for a time to intermit the exercise of his own religion should any disputes arise; and he engaged that neither he nor his attendants should in any manner contravene, or give countenance to such as contravened, the established religion of the country."
"A memo from March 1988 revealed the project was to be ditched because it "contravened" statements from ministers saying UFOs did not pose a threat to the UK."