someone's word is law
idiom
—used to say that other people must do what someone says
He'll listen to suggestions, but in the end, his word is law.
Cite this Entry
“Someone's word is law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/someone%27s%20word%20is%20law. Accessed 29 Nov. 2025.
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Merriam-Webster unabridged
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