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mustn't

American  
[muhs-uhnt] / ˈmʌs ənt /
  1. contraction of must not.


Usage

See contraction.

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.

See Examples For:

“Anticorruption efforts mustn’t be exploited, and the chaotic practice of ‘hyping up corruption’ must be curbed,” the official party newspaper of Sichuan province said in a commentary.

From The Wall Street Journal Aug. 10, 2026

But "we mustn't give in to this siren song," warned Bernard Jullien, an automotive industry specialist at the University of Bordeaux.

From Barron's May 8, 2026

"We mustn't end up like Iraq or Syria, honestly, we don't deserve that," a young man in Tehran said, referring to the civil wars which scarred those two countries this century.

From BBC Mar. 6, 2026

One is: We mustn’t ever get into a world where it’s got to be a genocide before we care about it.

From Slate Nov. 20, 2025

This outside world is full of people I mustn't trust.

From "Born Behind Bars" by Padma Venkatraman

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