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mustn't

contraction
\ ˈmə-sᵊnt How to pronounce mustn't (audio) \

Definition of mustn't

: must not

First Known Use of mustn't

1739, in the meaning defined above

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More Definitions for mustn't

mustn't

\ ˈmə-sᵊnt How to pronounce mustn't (audio) \

Kids Definition of mustn't

: must not

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