約定|やくじょうyakujou[0]heiban (flat)
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- noun, suru verb, transitive verbagreement; stipulation; contract
Conjugation
| Dictionary form | 約定する(やくじょうする) |
|---|---|
| Polite (masu) | 約定します(やくじょうします) |
| Negative (nai) | 約定しない(やくじょうしない) |
| polite (masen) | 約定しません(やくじょうしません) |
| classical zu / nu | 約定せず・約定せぬ(やくじょうせず・やくじょうせぬ) |
| Past (ta) | 約定した(やくじょうした) |
| polite (mashita) | 約定しました(やくじょうしました) |
| Past negative (nakatta) | 約定しなかった(やくじょうしなかった) |
| polite (masen deshita) | 約定しませんでした(やくじょうしませんでした) |
| Te form | 約定して(やくじょうして) |
| Potential | 約定できる(やくじょうできる) |
| Passive | 約定される(やくじょうされる) |
| Causative | 約定させる(やくじょうさせる) |
| Causative passive | 約定させられる(やくじょうさせられる) |
| Conditional (ba) | 約定すれば(やくじょうすれば) |
| tara | 約定したら(やくじょうしたら) |
| Volitional | 約定しよう(やくじょうしよう) |
| polite (mashou) | 約定しましょう(やくじょうしましょう) |
| Imperative | 約定しろ(やくじょうしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym契約けいやくNeutralA legally binding contract, as in 「契約書」; the most common everyday word. 「約定」 is more narrowly legal and financial, used for agreed terms and executed trades.
- Synonym協定きょうていFormalFormal: a pact reached through negotiation, typically between organizations; it stresses inter-group settlement rather than 「約定」's legal-financial usage.
- Synonym合意ごういNeutralMutual agreement: the parties' intentions align and consensus is reached. It stresses agreement of minds, while 「約定」 covers stipulated terms and executed trades.
- Synonym約束やくそくNeutralA promise or arrangement — the everyday word used most often; it need not carry legal force, unlike the legal-financial 「約定」.
- Synonym申し合わせもうしあわせNeutralAn understanding worked out among members of a group — an informal, internal arrangement. It lacks the legal-financial flavor of 「約定」.
- Synonym協約きょうやくFormalFormal: a pact concluded between organizations or states, as in 「労働協約」. 「約定」 is the legal-financial term for agreed terms and executed trades.
- Synonym締結ていけつFormalFormal: the act of concluding a treaty or contract, as in 「条約締結」「契約締結」, whereas 「約定」 refers to the agreement itself.
- Synonym取り決めとりきめNeutralThe arrangement or terms decided between parties, as in 「取り決めを守る」; a general word without 「約定」's legal-financial tilt.
- SynonymアグリーメントNeutralLoanword for an agreement, mainly in business settings and used less often; it does not carry 「約定」's legal-financial trade sense.
- SynonymコントラクトNeutralLoanword for a contract, used less often and mainly in business settings; it is less tied to legal and financial usage than 「約定」.
- Synonym議定ぎていWrittenWritten word for deciding something by group deliberation. Read 「ぎじょう」, it also names an early-Meiji government office.
- Synonym約諾やくだくWrittenWritten and rare: a mutual promise or pledge. It lacks 「約定」's legal-financial associations.
- Synonym約するやくするWrittenWritten verb meaning to promise or pledge, and also to shorten or abridge; less legal-financial in flavor than 「約定」.
- Related折り合いおりあいNeutralMutual compromise, each side giving ground, and by extension how people get along; a general word without 「約定」's legal-financial tilt.
- Related取り結ぶとりむすぶNeutralVerb for concluding a promise or contract; it also means to act as a go-between or to curry favor — far broader than 「約定」.
- Related契るちぎるWrittenArchaic, literary verb: to vow or pledge oneself solemnly; it also refers to a couple's sexual union.
「約定」 is the legal-financial term for stipulated terms and concluded trades, as in 「約定日」「約定価格」. For a contract say 「契約」; for everyday promises 「約束」; for reaching consensus 「合意」; for what was agreed 「取り決め」. The rest are formal, written, or specialized alternatives.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


