Inkuntri
Japanese Vocabulary & word formation

Legal Japanese: 権利, 義務, 契約, 損害, 責任

The reader can read core legal Japanese vocabulary by distinguishing rights, duties, contracts, liability, damages, and responsibility.

Published January 9, 2026 Japanese

Core examples: 権利, 義務, 契約, 損害, 責任, 違反, 解除, 賠償, 当事者, 甲/乙, 免責.

A lease, terms of service page, employment contract, or consumer notice may include:

権利 義務 契約 損害 責任

These words can be translated as rights, duties, contract, damage, and responsibility. But in legal writing, they are not merely moral ideas. They define enforceable roles, obligations, consequences, and remedies.

The key principle is:

Legal Japanese turns social relationships into parties, rights, duties, violations, liability, and remedies.

A learner must be careful. Legal words look familiar but operate inside a formal system.

This article is language guidance, not legal advice. For high-stakes documents, consult a qualified professional.

権利: rights

権利

means right or entitlement.

Examples:

権利を有する have the right

権利を行使する exercise a right

著作権 copyright

使用権 right of use

Legal writing often specifies who has a right, under what conditions, and against whom.

Learner action: identify the holder of the right and what action the right allows.

義務: duty or obligation

義務

means duty or obligation.

Examples:

義務を負う bear an obligation

支払義務 payment obligation

報告義務 reporting obligation

秘密保持義務 confidentiality obligation

Do not treat 義務 as merely moral duty. In contracts or law, it can create concrete required action.

Learner action: identify who must do what by when.

契約: contract

契約

means contract or agreement.

Common phrases:

契約を結ぶ conclude/sign a contract

契約を解除する terminate/cancel a contract

契約期間 contract period

契約条件 contract terms

A contract defines parties, obligations, rights, payment, term, breach, termination, and liability.

当事者, 甲, and 乙

当事者

means parties involved, especially legal parties.

Contracts may label parties as:

甲 Party A

乙 Party B

These are placeholders. The contract defines who 甲 and 乙 are at the beginning.

Learner action: before reading clauses, identify who is 甲 and who is 乙.

違反: violation or breach

違反

means violation or breach.

Examples:

契約に違反する breach a contract

規則違反 rule violation

法令違反 violation of laws and regulations

When you see 違反, look for consequence: termination, penalty, damages, suspension, or warning.

損害 and 賠償

損害 damage/loss

賠償 compensation/damages payment

Examples:

損害が発生する damage/loss occurs

損害を賠償する compensate for damages

損害賠償 damages compensation

損害 is the harm or loss. 賠償 is the act of compensating for it.

Learner action: distinguish harm from remedy.

責任: responsibility or liability

責任

can mean responsibility, but in legal contexts it may mean liability.

Examples:

責任を負う bear responsibility/liability

責任を問われる be held responsible

免責 exemption from liability/disclaimer

責任 is broader than English responsibility. In legal writing, it can determine who pays, who bears risk, or who is released from liability.

解除: termination/cancellation

解除

means cancellation, release, or termination depending on context.

Examples:

契約を解除する terminate/cancel a contract

制限を解除する lift a restriction

In contract language, 解除 can be serious. It may end contractual obligations under specified conditions.

免責: exemption from responsibility

免責

means exemption from liability or disclaimer.

Examples:

免責事項 disclaimer

当社は一切責任を負いません Our company bears no responsibility/liability

Learner action: read 免責 clauses carefully. They often limit what the company or party will be responsible for.

Example bank walkthrough

権利

Right/entitlement.

Learner action: identify who holds it and what it permits.

義務

Duty/obligation.

Learner action: identify required action and subject.

契約

Contract.

Learner action: read parties, term, obligations, termination.

損害

Damage/loss.

Learner action: ask what harm and how measured.

責任

Responsibility/liability.

Learner action: legal context may mean liability.

違反

Violation/breach.

Learner action: look for consequences.

解除

Termination/cancellation.

Learner action: serious in contracts.

賠償

Compensation for damages.

Learner action: connect to 損害.

当事者

Parties.

Learner action: identify who is bound by the document.

甲 / 乙

Party A / Party B labels.

Learner action: map them before reading.

免責

Exemption/disclaimer.

Learner action: read limitations carefully.

When reading legal Japanese:

  1. Identify parties: 当事者, 甲, 乙.
  2. Find rights: 権利, できる.
  3. Find duties: 義務, しなければならない.
  4. Find prohibitions: してはならない, 禁止.
  5. Find breach conditions: 違反, 怠った場合.
  6. Find consequences: 解除, 賠償, 損害, 責任.
  7. Find disclaimers: 免責, 責任を負わない.
  8. Check definitions: terms may be defined specially.
  9. Do not rely on casual meanings.

Before translating a legal sentence, identify the legal role of each noun.

Legal unitQuestion to ask
当事者Who is bound by the document?
権利Who may do or claim something?
義務Who must do something?
契約What relationship creates the duties?
違反What conduct breaks the rule?
損害What loss occurs?
賠償Who pays or remedies the loss?
解除What relationship ends?
免責Who avoids liability under what condition?

This turns dense legal Japanese into a role-and-effect diagram.

Responsibility versus liability

責任 is especially dangerous because English “responsibility” can sound moral or casual. In legal contexts, 責任 may mean liability: who bears legal consequences.

Compare:

責任を感じています。 I feel responsible.

当社は一切責任を負いません。 The company bears no liability/responsibility.

The second is not emotional. It is a legal-positioning phrase.

Contract Japanese is definition-heavy

Contracts often define terms at the beginning and then use them narrowly. 甲 and 乙 are not meaningful until defined. A word like 本サービス or 本契約 has a specific scope.

A reliable contract-reading sequence:

  1. Define 甲 and 乙.
  2. Identify 本契約 / 本サービス / 本件.
  3. Mark duties with しなければならない or 義務.
  4. Mark prohibitions with してはならない.
  5. Mark termination with 解除.
  6. Mark liability with 損害, 賠償, 責任, 免責.

For real legal stakes, language knowledge is not a substitute for legal advice.

A strong tool for this article would visualize legal relationships.

Suggested functions:

  1. Party mapper: 甲, 乙, 当事者.
  2. Rights/duties highlighter: 権利, 義務, できる, ならない.
  3. Breach detector: 違反, 不履行.
  4. Remedy map: 損害, 賠償, 解除.
  5. Disclaimer warning: 免責 clauses.
  6. Plain-language paraphrase: legal sentence into everyday Japanese.
  7. High-stakes caution: prompts to seek legal advice.

Final rule

Legal Japanese uses familiar words in enforceable ways.

権利 gives permission or entitlement. 義務 creates duty. 契約 defines parties. 違反 triggers consequences. 損害 names harm. 賠償 repairs harm. 責任 assigns liability. 免責 limits it.

Read legal vocabulary as a system of roles and effects, not as ordinary moral language.

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