約定|やくじょうyakujou[0]heiban (flat)

Common
Definitions
  1. 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.

Synonyms & antonyms
  • 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

Japanese definitions
  1. 契約けいやくすること。約束やくそくの取り決とりきめ。
Kanji in this word

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