How to say "agreement" in Japanese

Choosing the right word
  • 一致いっちJLPT N3approx.Common
    noun, suru verb, intransitive verbCovers agreement as accord or correspondence: when opinions, accounts, or findings match or are consistent. Think of views coming into accord, not of a promise or contract.
    凶器きょうきに残のこされた指紋しもんは容疑者ようぎしゃのものと一致いっちする。↗
    The fingerprints left on the weapon correspond with the suspect's.
  • 契約けいやくJLPT N3approx.Common
    noun, suru verb, transitive verbThe agreement that is a contract: a formal, binding arrangement between parties, the sense used in business and legal contexts. If English 'agreement' could be replaced by 'contract', this is the word.
    契約けいやくはかなりいいかげんなものだった。↗
    The contract was rather loose.
  • 約束やくそくJLPT N4approx.Common
    noun, suru verb, transitive verbAgreement as a promise or arrangement between people: giving one's word or fixing plans together. When English 'agreement' means a promise rather than a contract, this is the natural choice.
    自分じぶんが約束やくそくしたことはちゃんと実行じっこうするように最善さいぜんを尽つくすべきだ。↗
    You should do your best to carry out your promises.
  • 納得なっとくJLPT N3approx.Common
    noun, suru verb, transitive verb, intransitive verbAgreement as acceptance: being convinced that an explanation, decision, or outcome is reasonable. It points to inner assent rather than a mutual accord or promise.
  • 同意どういJLPT N1approx.Common
    noun, suru verb, intransitive verbAgreement as consent or assent: saying yes to a proposal, request, or opinion. Use it when someone agrees with or approves what another person proposes.
    ボブはその計画けいかくに同意どういしなかった。↗
    Bob did not agree to the plan.

Use 契約 for a formal contract, 同意 for consent or assent, 納得 for acceptance after being convinced, 約束 for a promise or arrangement, and 一致 for accord or correspondence between views or facts.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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