最さい後ご通つう牒ちょうさいごつうちょうMeanings1nounultimatumyojijukugo (four-character idiom)A final demand or set of terms issued by one party to another, with a threat of serious consequences if not accepted. Often used in diplomatic, business, or personal contexts.組くみ合あいは会かい社しゃに最さい後ご通つう牒ちょうを突つきつけた。The union issued an ultimatum to the company.
