Dictionary/締約ていやくTeiyaku締約 (Teiyaku) is a Japanese noun meaning “conclusion of a treaty”.Meaningsnoun, suru verb, transitive verb, intransitive verbconclusion of a treatyKanji in 締約締tighten約promiseRelated words約束promise閉まるto be shut契約contract要約summary約approximately予約reservation婚約者fiance紐育New York婚約engagement契約書(written) contract締めるto tie締め切るto close up