ultimatum

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌʌltɪˈmeɪtəm/

US:USA pronunciation: IPAUSA pronunciation: IPA/ˌʌltəˈmeɪtəm, -ˈmɑ-/

US:USA pronunciation: respellingUSA pronunciation: respelling(ul′tə mātəm, -mä-)


Inflections of 'ultimatum' (n):
ultimatums
npl
ultimata
npl

WordReference Random House Learner's Dictionary of American English © 2026
ul•ti•ma•tum /ˌʌltəˈmeɪtəm, -ˈmɑ-/USA pronunciation   n. [countable], pl. -tums, -ta /-tə/USA pronunciation .
  1. a final demand issued by one side in a dispute, that if rejected will lead to the ending of talks and the use of force.
See -ult-.
WordReference Random House Unabridged Dictionary of American English © 2026
ul•ti•ma•tum  (ul′tə mātəm, -mä-),USA pronunciation n., pl. -tums, -ta (-tə).USA pronunciation 
  1. a final, uncompromising demand or set of terms issued by a party to a dispute, the rejection of which may lead to a severance of relations or to the use of force.
  2. a final proposal or statement of conditions.
  • Neo-Latin, noun, nominal use of neuter of Late Latin ultimātus. See ultimate
  • 1725–35

Collins Concise English Dictionary © HarperCollins Publishers::
ultimatum /ˌʌltɪˈmeɪtəm/ n ( pl -tums, -ta /-tə/)
  1. a final communication by a party, esp a government, setting forth conditions on which it insists, as during negotiations on some topic
  2. any final or peremptory demand, offer, or proposal
Etymology: 18th Century: from New Latin, neuter of ultimatus ultimate
'ultimatum' also found in these entries (note: many are not synonyms or translations):

Forum discussions with the word(s) "ultimatum" in the title:


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