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Definition of "ultimatum" []

  • A final statement of terms made by one party to another. (noun)
  • A statement, especially in diplomatic negotiations, that expresses or implies the threat of serious penalties if the terms are not accepted. (noun)

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 "ultimatum" in a sentence
  • "The opposition Armenian National Congress has called a protest for March 17, after delivering the government what it called an ultimatum earlier this month."
  • "His upset, the doctor recorded, was “due to what he termed an ultimatum that had been served upon him by Bulganin.”"
  • "In the morning she gave him what she called an ultimatum."