ultimatum

ultimatum
(pl. ultimatums ultimata -tə)
  1. a final demand or statement of terms, the rejection of which will result in retaliation or a breakdown in relations
    最后通牒;哀的美敦书
    the British government issued an ultimatum to Hitler to cease invasion of Poland.
    英国政府向希特勒发出停止侵略波兰的最后通牒。
语源
  1. mid 18th cent.: from Latin, neuter past participle of ultimare 'come to an end'
英语宝典
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