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Definition of "mustn't" []

  • Contraction of must not. (noun-possessive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "mustn't" in a sentence
  • "Furthermore the rhetoric of todays programmers sounds similar to protectionist and ludites of the past, thier arguements must carry the same wieght, mustn't they?"
  • "One really mustn't choose to evaluate changes in a balance sheet by looking at only one side of it."
  • "Just because the wartime generation has largely gone, we mustn't lose our comic nerve."
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