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must +‎ -n't


  • IPA(key): /ˈmʌs.n̩t/
    • (file)



  1. must not (negative auxiliary[1]); used to indicate that something is forbidden or, in a tag question, that something is not necessary.
    You mustn't blame yourself for this tragedy.
    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.

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  1. ^ Arnold M. Zwicky and Geoffrey K. Pullum, Cliticization vs. Inflection: English n’t, Language 59 (3), 1983, pp. 502-513