mustn't

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English[edit]

Etymology[edit]

must +‎ -n't

Pronunciation[edit]

Contraction[edit]

mustn't

  1. must not; used to indicate that something is forbidden or, in a tag question, that something is not necessary.
    If you see a hedgehog, you mustn't touch it.
    You mustn't blame yourself.
    We must go, mustn't we?
    • 1906, Edith Nesbit, The Railway Children, Chapter 4: The engine-burglar,
      "Now, listen," said Mother; "it's quite true that we're poor, but we have enough to live on. You mustn't go telling everyone about our affairs--it's not right. And you must never, never, never ask strangers to give you things. Now always remember that--won't you?"
    • 1989: Batman (movie)
      Look, we mustn't mistake ourselves for regular people. We're artists.

Related terms[edit]

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