noun.
The act of opposing, antagonizing, or obstructing; counteraction.
noun.
The act of transgressing or violating; violation: as, the proceedings of the allies were in contravention of the treaty.
noun.
Specifically Violation of a legal condition or obligation by which the contravener is bound: especially applied, in Scots law, to an act done by an heir of entail in opposition to the provisions of the deed, or to acts of molestation or outrage committed by a person in violation of law-burrows.