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Definition ultimatum in British English

ultimatum noun

[countable] noun
/ˌʌltɪˈmeɪtəm/
1

a statement that orders someone to do something and threatens to punish or attack them if they do not

Example

Their ultimatum expires at midnight.

Example

NATO gave the Serbs an ultimatum.

Example

The management yesterday issued an ultimatum to the workforce.

Synonyms and related words
Definition ultimatum in British English