/ˌʌltɪˈmeɪtəm/
ul·ti·matum
BrE /ˌʌltɪˈmeɪtəm/
NAmE /ˌʌltɪˈmeɪtəm/
(
plural
ul·ti·matums or
ul·ti·ma·ta
BrE /ˌʌltɪˈmeɪtə/
NAmE /ˌʌltɪˈmeɪtə/)
a final warning to a person or country that if they do not do what you ask, you will use force or take action against them
to issue an ultimatum