lay down the law

lay down the law verb administer the law, carry into effect the law, carry into execution the law, carry out the law, compel obedience with the law, effectuate the law, enforce the law, enforce to the letter of the law, ensure compliance, execute the law, implement the law, impose the law, insist upon, make compulsory, mandate, obtain by force, put into effect, put into execution, put pressure on, read the riot act, require, strictly regulate, subject to pressure

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See also: direct, instruct