最さい後ご通つう牒ちょうさいごつうちょうじ字FuriganaMeanings1nounultimatumyojijukugo (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