The origin of the idiom "lay down the law" can be traced back to the legal system and the concept of judges or legal authorities establishing rules or pronouncing judgments. The phrase likely emerged from the idea that when a judge "lays down the law," they are asserting their authority to provide a definitive interpretation of the law and set the guidelines for behavior or resolution. It is often employed in situations where there is a need to maintain order, resolve conflicts, or ensure compliance.

What is the origin of the idiom "lay down the law" and when to use it?

英語での「 lay down the law」の定義と意味

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