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unwritten rule



NOUN
rule of thumb
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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An unwritten rule has it that the top UN post rotates among the world's main regions, and now it's the turn of Latin America.

From Barron's ● Mar. 24, 2026

That competitive streak apparently overrides the unwritten rule not to concuss one’s future spouse.

From The Wall Street Journal ● Feb. 13, 2026

Her university has an unwritten rule that students must sign an employment contract or provide proof of internship within one year of graduation; otherwise, they won't receive a diploma.

From BBC ● Aug. 10, 2025

The unwritten rule to only bet foreign horses in Breeders’ Cup turf races was three for three, with all the winners coming from Ireland.

From Los Angeles Times ● Nov. 1, 2024

I remember feeling furious at Polly for so stupidly breaking the unwritten rule, but at the same time, being terribly excited about what answer Miss Lucy might give.

From "Never Let Me Go" by Kazuo Ishiguro




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