無効 في 30 ثانية
- Used to describe things that are invalid or void, like tickets, rules, or digital settings.
- Commonly paired with 'ni naru' (become invalid) and 'ni suru' (make invalid).
- Essential for legal, business, and technical contexts in Japan.
- Distinguishable from 'muda' (waste) and 'shikkō' (expiration).
The Japanese word 無効 (むこう - mukō) is a fundamental noun and na-adjective used to describe something that has lost its legal force, effectiveness, or validity. At its core, it combines the kanji 無 (mu), meaning 'nothing' or 'without,' and 効 (kō), meaning 'effect' or 'efficacy.' Therefore, the literal translation is 'without effect.' This word is ubiquitous in Japanese society, appearing in everything from legal documents to digital user interfaces. When a contract is found to have a fundamental flaw, it is declared mukō. When a sports player commits a foul before scoring, the point is rendered mukō. Even in daily life, if you try to use an expired coupon at a convenience store, the clerk might politely explain that the coupon is no longer valid using this term.
- Legal Context
- In the legal sphere, 無効 refers to an act that is void from the beginning (ab initio). Unlike 'cancellation' (取り消し - torikeshi), which assumes an act was valid until it was stopped, a void act is treated as if it never happened. This is a critical distinction in Japanese civil law.
- Digital and UI Context
- In software development and technology, you will frequently see 無効にする (to disable/make invalid) and 有効にする (to enable/make valid). For example, a 'disabled button' is often described as being in a 無効 state.
期限が切れているため、このチケットは無効です。
The versatility of 無効 extends to abstract concepts as well. If an argument is based on a false premise, the logic itself might be called mukō. In the realm of sports, specifically in Sumo or Martial Arts, a match can be declared mukō-jiai (no contest) if neither party can be declared a winner or if external factors interfere. Understanding this word is essential for navigating Japanese bureaucracy and technology.
入力されたパスワードは無効な形式です。
- Medical Efficacy
- While 無効 can mean 'ineffective' in a medical sense (e.g., a treatment that doesn't work), Japanese speakers more commonly use 効果がない (kōka ga nai) for medicine. Use 無効 primarily for rules and binary states.
その契約は法律によって無効とされた。
Using 無効 correctly requires understanding its grammatical flexibility. It functions primarily as a noun, but in practice, it acts like a no-adjective or a na-adjective depending on the sentence structure. The most common patterns involve the verbs になる (ni naru) and にする (ni suru). These phrases allow you to describe something losing its validity or someone actively revoking it.
このクーポンは、他。の割引と併用すると無効になります。
When you want to say that something is 'invalid' as a state, you use 無効だ (mukō da) or 無効です (mukō desu). If you are modifying a noun directly, such as an 'invalid ticket,' you can say 無効なチケット or sometimes 無効のチケット, though the former is more common in modern usage. In formal writing, particularly in legal or business contexts, you will see it paired with と見なす (to minasu), meaning 'to be regarded as invalid.'
- Common Verb Pairings
- 無効にする: To invalidate / To void (Active action)
- 無効になる: To become invalid / To expire (Passive change)
- 無効を宣言する: To declare invalidity
- 無効を申し立てる: To file a claim for invalidity (Legal)
管理者権限でその設定を無効にしました。
In a technical setting, you might encounter 無効化 (mukōka), which means 'invalidation' or 'deactivation.' This is often used as a noun to describe the process of making something ineffective. For example, kinō no mukōka means 'disabling of a function.' This suffix -ka (化) is very productive in Japanese, turning nouns into concepts of 'becoming' or 'making into.'
不正な操作が行われたため、アカウントが一時的に無効化されました。
If you spend any time in Japan or interact with Japanese systems, 無効 will become a very familiar sight. It is not just a 'dictionary word'; it is a 'life word.' You will hear it in train stations, see it on websites, and read it in news reports about elections or court cases. Its frequency is particularly high in domains where rules and systems are central.
- At the Train Station
- If you try to go through a ticket gate with an expired pass, the gate will close and a screen will often flash 「このカードは無効です」 (This card is invalid). Station staff use this word when explaining why a certain ticket cannot be used for a specific express train.
- In Politics and News
- During elections, you will hear about 無効票 (mukōhyō)—invalid votes. These are ballots that were filled out incorrectly, left blank, or had extra comments written on them, rendering them uncountabe. News anchors will report the number of mukōhyō to show the level of voter error or protest.
選挙管理委員会は、書き込みのある投票を無効票として処理した。
In the business world, 無効 is vital for contract negotiations. If a contract is signed by someone without the proper authority, a lawyer will argue that the keiyaku (contract) is mukō. You might also hear it in sports commentary. In soccer, if a goal is scored after the referee blew the whistle for a foul, the commentator will say 「今のは無効です！」 (That one is invalid/doesn't count!).
オフサイドの判定により、ゴールは無効になった。
- Online Shopping
- When shopping on Amazon Japan or Rakuten, if you enter a gift card code that has already been used, you will see the error message 「このコードは無効です」. It is the standard way to say a code is incorrect or spent.
While 無効 (mukō) seems straightforward, English speakers often make mistakes by overusing it or confusing it with similar-sounding words. The most common error is the confusion with its homophone 向こう (mukō), which means 'over there' or 'the other side.' While they sound the same, the 'o' in 'over there' is long (mukou), whereas in 'invalid,' it is short (muko) in some dialects but usually long in standard Tokyo Japanese. The real difference lies in the kanji and the context.
- Mistake 1: Mukō vs. Muri
- Learners sometimes use 無効 when they mean 無理 (muri). 無理 means 'impossible' or 'too much.' For example, if you can't enter a room, don't say 'The door is mukō.' Say the door is locked or it's muri to enter. 無効 only refers to the validity of a rule or status.
- Mistake 2: Mukō vs. Muda
- Another common confusion is with 無駄 (muda), which means 'waste' or 'useless.' If you do something that doesn't produce results, it is muda. If you do something that doesn't count because it broke a rule, it is mukō. For instance, 'studying for a test that was canceled' is muda, but 'a test answer written after the time limit' is mukō.
❌ 彼の努力は無効だった。
✅ 彼の努力は無駄だった。
In writing, the kanji 効 (effect) is often confused with 功 (merit/success). Both are pronounced 'kō.' However, 無功 is not a standard word. Always ensure you are using the 'effect' kanji which features the 'power' (力) radical on the right side.
❌ この免許は取消です。
✅ この免許は無効です。
To truly master 無効, you need to know how it compares to its cousins in the 'lack of effect' family. Japanese has several words that overlap with 'invalid,' each with a specific flavor and domain of use.
- 無効 (Mukō) vs. 失効 (Shikkō)
- 失効 specifically means 'to lose effect' or 'to expire.' While mukō describes the state of being invalid, shikkō describes the process of the validity running out. For example, a passport shikkō (expires) after 10 years, and then it is in a mukō (invalid) state.
- 無効 (Mukō) vs. 取消 (Torikeshi)
- 取消 means 'cancellation' or 'revocation.' In law, mukō means something was never valid to begin with, whereas torikeshi means something was valid but has been made invalid from a certain point onward because of a specific action.
- 無効 (Mukō) vs. 無用 (Muyō)
- 無用 means 'useless' or 'unnecessary.' It is often used in signs like 「天地無用」 (Tenchi Muyō - Do not overturn/This side up) or 「他言無用」 (Tagon Muyō - Don't tell others). It doesn't mean something is 'invalid' by a rule, but rather that it is 'forbidden' or 'not needed.'
免許証が失効したので、運転はできません。
Finally, we have 無力 (muryoku), which means 'powerless' or 'helpless.' This is used for people or organizations, not for tickets or contracts. If you feel like you can't do anything to stop a disaster, you are muryoku. If your ticket doesn't work, it is mukō.
このボタンを無効化してください。
How Formal Is It?
حقيقة ممتعة
The kanji for 'Mu' (無) is one of the most famous in Zen Buddhism, representing 'nothingness.' In 'Mukō,' it literally means the 'nothingness of effect.'
دليل النطق
- Pronouncing it like 'muko' (son-in-law) with a short 'o'.
- Confusing it with 'mukō' (over there) which has a different pitch.
- Over-emphasizing the 'u' sound.
- Using English 'v' sounds for 'b' sounds in related words.
- Misplacing the stress on the first syllable.
مستوى الصعوبة
The kanji are common but require knowledge of the 'effect' radical.
Writing '効' can be tricky for beginners due to the number of strokes.
Pronunciation is easy, but pitch accent matters.
Easy to recognize in context, but watch out for homophones.
ماذا تتعلّم بعد ذلك
المتطلبات الأساسية
تعلّم لاحقاً
متقدم
قواعد يجب معرفتها
Ni naru / Ni suru with nouns
無効になる / 無効にする
Na-adjective noun modification
無効なデータ
Relative clauses
無効になったチケット
Passive voice with suru-verbs
無効化される
Formal 'to naru' transition
無効となります
أمثلة حسب المستوى
このチケットは無効です。
This ticket is invalid.
Noun + desu (Simple state).
カードが無効になりました。
The card became invalid.
Ni naru (Change of state).
それは無効だよ。
That's invalid (casual).
Casual sentence ending.
無効なパスワードです。
It is an invalid password.
Na-adjective modifying a noun.
このボタンは無効です。
This button is disabled.
Simple identification.
無効なコード。
Invalid code.
Noun phrase.
期限切れで無効です。
Expired and invalid.
Reason + de + result.
無効にしてください。
Please make it invalid (disable it).
Ni shite kudasai (Request action).
古い住所の書類は無効になります。
Documents with the old address will become invalid.
Future/Habitual change.
設定を無効にしましたか？
Did you disable the settings?
Past tense question.
名前がないチケットは無効です。
Tickets without a name are invalid.
Relative clause (nai) + noun.
このクーポンはもう無効だよ。
This coupon is already invalid.
Adverb 'mō' (already).
無効なメールアドレスです。
It is an invalid email address.
Standard error message format.
ルールを守らないと無効になるよ。
If you don't follow the rules, it will become invalid.
Condition 'to' (if/when).
そのパスは明日から無効です。
That pass is invalid from tomorrow.
Time + kara (from).
通知を無効に設定しました。
I set notifications to disabled.
Ni settei suru (to set to).
契約書にサインがない場合、契約は無効となります。
If there is no signature on the contract, the contract will be void.
To naru (Formal version of ni naru).
不正なアクセスを検知したため、キーを無効化しました。
Because unauthorized access was detected, the key was invalidated.
Mukōka (Deactivation/Invalidation).
間違えて無効なリンクをクリックしてしまった。
I accidentally clicked an invalid link.
Te shimau (Accidental action).
この法律は、新しい条例によって無効にされた。
This law was rendered invalid by a new ordinance.
Passive voice (sareta).
無効票が多いと、選挙の結果に影響します。
If there are many invalid votes, it affects the election results.
Conditional 'to' + influence.
セキュリティのために、古いセッションを無効にする必要があります。
For security reasons, it is necessary to invalidate old sessions.
Hitsuyō ga aru (Necessary to).
その主張は証拠がないため無効だと言わざるを得ない。
I have to say that claim is invalid because there is no evidence.
Iwazaru o enai (Cannot help but say).
無効な手続きを繰り返しても意味がありません。
There is no point in repeating invalid procedures.
Te mo imi ga nai (No point in doing).
手続き上の不備により、その決議は無効と見なされた。
Due to procedural flaws, that resolution was regarded as invalid.
To minasareru (To be regarded as).
一度無効になった権利を回復するのは難しい。
It is difficult to recover a right that has once become invalid.
Relative clause modifying 'kenri'.
この特許は新規性がないとして無効審判が請求された。
An invalidation trial was requested for this patent on the grounds of lack of novelty.
Mukō-shinpan (Invalidation trial).
ログイン試行が上限に達したため、アカウントを一時的に無効にします。
Because login attempts reached the limit, the account will be temporarily disabled.
Jōgen ni tassuru (Reach the limit).
契約の無効を主張するためには、強力な証拠が必要です。
In order to claim the invalidity of a contract, strong evidence is required.
Tame ni wa (In order to).
無効なデータを入力すると、システムがクラッシュする恐れがあります。
If you input invalid data, there is a risk the system might crash.
Osore ga aru (There is a risk/fear).
裁判所はその行政処分を無効と判示した。
The court ruled the administrative action as void.
To hanshita (Ruled/Judged that).
無効化された機能を再度有効にするには、再起動が必要です。
To re-enable a deactivated function, a restart is required.
Saido (Again/Once more).
公序良俗に反する契約は、当然に無効とされる。
Contracts that violate public order and morals are naturally rendered void.
Tōzen ni (Naturally/As a matter of course).
当該条項が無効であるとの司法判断が下された。
A judicial decision was handed down stating that the clause in question is invalid.
Tōgai (The said/In question).
意思能力を欠く状態で行われた法律行為は無効である。
Legal acts performed in a state lacking mental capacity are void.
Ishi-nōryoku (Mental capacity).
無効な婚姻の取り消しを求める訴えが提起された。
A lawsuit was filed seeking the annulment of an invalid marriage.
Teiki sareru (To be filed/brought).
憲法に違反する法律は、その効力を有せず、無効となる。
Laws that violate the Constitution do not have effect and become void.
Kōryoku o yusezu (Not possessing effect).
認証トークンが無効化されたため、APIへのアクセスが拒否された。
Because the authentication token was invalidated, access to the API was denied.
Kyohi sareru (To be denied).
錯誤に基づく意思表示の無効を主張する。
I claim the invalidity of the declaration of intent based on a mistake.
Sakugo (Mistake/Error in law).
無効な遺言書は、相続において法的拘束力を持たない。
An invalid will has no legal binding force in inheritance.
Hōteki-kōsokuryoku (Legal binding force).
法の支配において、適法性を欠く行政行為は無効の瑕疵を孕む。
Under the rule of law, administrative acts lacking legality contain the flaw of nullity.
Kashi o haramu (To contain/bear a flaw).
絶対的無効と相対的無効の差異は、第三者保護の観点から重要である。
The difference between absolute and relative nullity is important from the perspective of third-party protection.
Kanten (Perspective/Point of view).
その契約は通謀虚偽表示により、当事者間では無効となる。
The contract is void between the parties due to a conspiracy of false representation.
Tsūbō-kyogi-hyōji (Conspiracy of false representation).
無効な規定を分離し、残りの契約を有効に保つ「分離条項」が検討された。
A 'severability clause' was considered to separate invalid provisions and keep the rest of the contract valid.
Bunri-jōkō (Severability clause).
信義則に反する権利の行使は、実質的に無効と等しい。
The exercise of rights contrary to the principle of good faith is substantially equivalent to being invalid.
Shingisoku (Principle of good faith).
遡及的に無効となることで、既履行の給付には不当利得返還義務が生じる。
By becoming void retroactively, an obligation to return unjust enrichment arises for performances already rendered.
Sokyū-teki (Retroactive).
法的な無効性は、社会秩序の維持という要請から導き出される。
Legal invalidity is derived from the requirement of maintaining social order.
Yōsei (Requirement/Demand).
無効確認の訴えは、即時確定の利益がある場合に限り認められる。
An action for confirmation of invalidity is recognized only when there is an interest in immediate determination.
Kagiri mitomerareru (Recognized only when).
تلازمات شائعة
العبارات الشائعة
— To officially file a claim that something is invalid.
弁護士は契約の無効を申し立てた。
— To be rendered or regarded as invalid by an authority.
その行為は無効とされる。
— Temporarily disabled or invalid.
アカウントは一時的に無効です。
— Completely invalid.
その法案は全面的に無効だ。
— Invalid retroactively (from the start).
契約は遡及的に無効となった。
— Naturally/Automatically invalid.
その規則は当然無効です。
— An invalid operation (often in computing).
無効な操作が行われました。
— An invalid signature.
無効な署名では受理できません。
— To confirm the invalidity of something.
ステータスが無効であることを確認した。
— To avoid being invalidated.
修正によって無効を免れた。
يُخلط عادةً مع
Means 'over there.' Sounds similar but has different kanji and meaning.
Means 'waste.' Use for useless effort, not for rule-based invalidity.
Means 'impossible.' Use for things you can't do, not for validity.
تعبيرات اصطلاحية
— To come to nothing; to be rendered void or ineffective.
長年の努力が無効に帰した。
Formal/Literary— Completely void, as if the paper were blank.
その合意は白紙無効だ。
Business/Legal— A play on 'chōbutsu' (useless thing), referring to something large and invalid.
この古い法律は無効の長物だ。
Literary— To hold no power/effect (synonym for mukō).
そのルールはここでは効力を持たない。
Neutral— To become a mere shell (lose real effect/become invalid in practice).
校則が形骸化している。
Academic— To lose practical effectiveness.
対策が実効性を失った。
Business— Existing in name only; having no substance/invalid in practice.
その役職は有名無実だ。
Common— To scrap; to treat as waste paper (to invalidate a promise/contract).
約束を反故にする。
Idiomatic— Helpless/Invalid (in the sense of having no way to start).
交渉は無効で取り付く島もない。
Idiomatic— To return to nothing (similar to mukō ni kisuru).
全てが無に帰した。
Literaryسهل الخلط
Both deal with losing validity.
Shikkō is the act of expiring; Mukō is the state of being invalid.
パスポートが失効(shikkō)したので、今は無効(mukō)です。
Both stop something from being valid.
Torikeshi is an active cancellation; Mukō often implies it was never valid or expired naturally.
予約を取り消す(torikeshi)と、その権利は無効(mukō)になる。
Both start with 'Mu'.
Muyō means 'unnecessary' or 'forbidden'; Mukō means 'invalid'.
心配無用(muyō)だが、この券は無効(mukō)だ。
Both mean a lack of something.
Muryoku is for people (powerless); Mukō is for rules/things (invalid).
私は無力(muryoku)だが、彼の契約は無効(mukō)だ。
Both end a state.
Kaijo is specifically for terminating contracts or releasing locks.
契約を解除(kaijo)して無効(mukō)にする。
أنماط الجُمل
[Noun] は 無効 です。
この 券 は 無効 です。
[Noun] を 無効 に します。
通知 を 無効 に します。
[Reason] ので、[Noun] は 無効 に なりました。
期限 が 切れた ので、チケット は 無効 に なりました。
[Authority] によって [Noun] は 無効 と 見なされる。
裁判所 によって 契約 は 無効 と 見なされる。
[Condition] に 基づき、[Noun] の 無効 を 主張 する。
錯誤 に 基づき、契約 の 無効 を 主張 する。
[Action] は [Concept] に 反し、当然に 無効 である。
その 行為 は 信義則 に 反し、当然に 無効 である。
無効 な [Noun] を [Verb]。
無効 な リンク を クリック した。
[Noun] が 無効化 された ため、[Result]。
アカウント が 無効化 された ため、ログイン できない。
عائلة الكلمة
الأسماء
الأفعال
الصفات
مرتبط
كيفية الاستخدام
Very common in daily life, tech, and law.
-
Using 'mukō' for 'impossible'.
→
無理 (muri)
Mukō is about validity, Muri is about possibility.
-
Using 'mukō' for 'useless effort'.
→
無駄 (muda)
Mukō is for rules/status, Muda is for wasted resources/time.
-
Writing '向こう' for 'invalid'.
→
無効
向こう means 'over there'.
-
Saying 'mukō no hito' for a powerless person.
→
無力な人 (muryoku na hito)
Mukō is not for people's abilities.
-
Confusing 'mukō' with 'shikkō'.
→
Depends on context.
Shikkō is the expiration process, Mukō is the resulting state.
نصائح
Using 'Ni Naru'
Always use 'ni naru' when you want to say something *became* invalid because of a deadline.
Kanji Precision
Ensure the 'Mu' kanji has the correct number of horizontal strokes (four in the middle).
Settings Menu
Look for 無効 (mukō) if you need to turn off or disable a feature in a Japanese app.
Polite Rejection
If someone gives you something invalid, say 'mōshiwake arimasen ga, kore wa mukō desu' to be polite.
Pairing Antonyms
Learn 'Yūkō' and 'Mukō' together as a set; they are high-frequency opposites.
Office Talk
Use 'mukōka' when discussing deactivating user accounts in a meeting.
JLPT Tip
This word often appears in reading sections about rules or announcements.
Pitch Accent
Try to keep your pitch flat for 'invalid' and rising for 'over there'.
Visual Aid
Visualize a 'Void' stamp hitting a paper; that stamp is the word 'Mukō'.
Avoid Muda
Don't say 'my study was mukō'; say 'my study was muda' if it didn't help.
احفظها
وسيلة تذكّر
Think of a 'Moo' (無) cow that has no 'Go' (効). It just sits there. It's invalid! No effect!
ربط بصري
Imagine a big red 'X' over a contract or a ticket. The 'X' is the shape of the 'power' radical in the second kanji 効.
Word Web
تحدٍّ
Try to find 3 things in your house that are 'mukō' (expired coupons, old IDs, broken links) and say 'Kore wa mukō desu' for each.
أصل الكلمة
Derived from Middle Chinese roots. 'Mu' (無) comes from the character for a dancer, later used for 'nothing.' 'Kō' (効) comes from 'to imitate' and 'power,' leading to the meaning of 'result' or 'effect.'
المعنى الأصلي: To lack the power to produce a result.
Sino-Japanese (Kango).السياق الثقافي
Be careful not to use 'mukō' to describe a person's worth; use 'muryoku' (powerless) or other terms instead. 'Mukō' is for things and rules.
In English, we use 'invalid,' 'void,' or 'null.' In tech, we say 'disabled.' Japanese uses 'mukō' for all three.
تدرّب في الحياة الواقعية
سياقات واقعية
Transport
- 無効なチケット
- 定期券が無効になる
- 改札口で無効と出る
- 期限切れで無効
Digital/Tech
- 設定を無効にする
- 無効なユーザー名
- JavaScriptを無効化
- リンクが無効
Legal/Business
- 契約の無効
- 無効を主張する
- 法的無効
- 署名が無効
Sports
- 無効試合
- ゴールは無効
- 記録を無効にする
- ファウルで無効
Elections
- 無効票の数
- 投票を無効にする
- 無効な名前
- 白紙は無効
بدايات محادثة
"このクーポン、まだ使えますか？それとも無効ですか？"
"間違えて設定を無効にしちゃったんだけど、どうすればいい？"
"選挙の無効票って、どうしてあんなに多いんだろうね？"
"契約書に不備があったら、全部無効になっちゃうのかな？"
"スポーツでせっかくのゴールが無効になった時、どう思う？"
مواضيع للكتابة اليومية
今日、無効（むこう）になったチケットやクーポンがありましたか？その時の気持ちを書いてください。
あなたが「これを無効にしたい！」と思うルールや法律はありますか？理由と一緒に書いてください。
デジタルの世界で「無効にする」機能はなぜ大切だと思いますか？
努力が無駄（むだ）になるのと、結果が無効（むこう）になるの、どちらが辛いですか？
日本の選挙での無効票について、あなたの意見を日本語でまとめてみましょう。
الأسئلة الشائعة
10 أسئلةNo, it is used in sports (invalid goals), tech (disabled buttons), and daily life (expired coupons).
The opposite is 'yūkō' (有効), which means valid or effective.
Generally, no. For a person who is 'ineffective' or 'powerless,' use 'muryoku' (無力).
Yes, it can function as a na-adjective (mukō na) or a noun (mukō desu).
'Mukōka' (無効化) means the act of making something invalid, like deactivating a software feature.
You can say 'Kono rinku wa mukō desu' or 'Rinku ga kirete imasu'.
It is called 'mukō-hyō' (無効票).
Yes, it is a standard neutral word. Use 'desu' to make it polite.
It is better to say 'kōka ga nai' (no effect) for medicine, though 'mukō' is technically possible in a clinical sense.
That is 'mukō' (向こう), written with different kanji. They are homophones.
اختبر نفسك 200 أسئلة
Write a sentence using '無効' to describe an expired coupon.
Well written! Good try! Check the sample answer below.
Explain in Japanese why a contract might be '無効'.
Well written! Good try! Check the sample answer below.
Write a sentence about disabling notifications on a phone.
Well written! Good try! Check the sample answer below.
Describe an invalid goal in a soccer match.
Well written! Good try! Check the sample answer below.
Write a formal sentence about a court ruling a law void.
Well written! Good try! Check the sample answer below.
Translate: 'This passport is already invalid.'
Well written! Good try! Check the sample answer below.
Translate: 'Please deactivate this function.'
Well written! Good try! Check the sample answer below.
Write about the number of invalid votes in an election.
Well written! Good try! Check the sample answer below.
Translate: 'The contract became void retroactively.'
Well written! Good try! Check the sample answer below.
Use '無効な' to describe an email address.
Well written! Good try! Check the sample answer below.
Write a short dialogue about a broken ticket gate.
Well written! Good try! Check the sample answer below.
Translate: 'The resolution was regarded as invalid.'
Well written! Good try! Check the sample answer below.
Write a sentence using '無効審判' (invalidation trial).
Well written! Good try! Check the sample answer below.
Translate: 'Unauthorized access was detected.'
Well written! Good try! Check the sample answer below.
Write a sentence using '当然無効'.
Well written! Good try! Check the sample answer below.
Translate: 'The claim is invalid without evidence.'
Well written! Good try! Check the sample answer below.
Write a sentence about a void marriage.
Well written! Good try! Check the sample answer below.
Translate: 'Please input a valid code.'
Well written! Good try! Check the sample answer below.
Write a sentence using '無効に帰する'.
Well written! Good try! Check the sample answer below.
Translate: 'The setting has been disabled.'
Well written! Good try! Check the sample answer below.
Explain to a friend why their old ticket doesn't work.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Ask a staff member if a coupon is still valid.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Tell your boss you disabled a certain feature.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Argue that a rule should be invalidated.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Explain 'mukō-hyō' to someone who doesn't know.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Tell a customer their card is invalid.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Confirm that you want to deactivate your account.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Announce that a goal was disallowed.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Describe a legal problem with a contract.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Explain the difference between 'mukō' and 'yūkō'.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Ask how to disable notifications.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
State that a claim is invalid without proof.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Talk about an expired passport.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Say a match was void due to rain.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Tell someone they entered an invalid email.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Discuss the nullity of a marriage formally.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Say a setting has been deactivated by the admin.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Say 'That doesn't count!' in a game.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Explain why a vote was invalid.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Confirm that a link is broken.
Read this aloud:
قلت:
Speech recognition is not supported in your browser. Try Chrome or Edge.
Listen and transcribe: このチケットは無効です。
Listen and transcribe: 設定を無効にします。
Listen and transcribe: 契約が無効になった。
Listen and transcribe: 無効票が多かった。
Listen and transcribe: 機能を無効化してください。
Listen and transcribe: 無効なリンクです。
Listen and transcribe: 期限切れで無効だ。
Listen and transcribe: 当然無効とされる。
Listen and transcribe: 無効な形式のデータ。
Listen and transcribe: 無効試合になった。
Listen and transcribe: 無効を宣言する。
Listen and transcribe: アカウントを無効にする。
Listen and transcribe: 遡及的に無効だ。
Listen and transcribe: 無効な署名。
Listen and transcribe: ルールは無効です。
/ 200 correct
Perfect score!
Summary
無効 (mukō) means 'invalid' or 'void.' Use it when a rule makes something ineffective, like an expired ticket or a broken contract. Example: 'Kono pasupōto wa mukō desu' (This passport is invalid).
- Used to describe things that are invalid or void, like tickets, rules, or digital settings.
- Commonly paired with 'ni naru' (become invalid) and 'ni suru' (make invalid).
- Essential for legal, business, and technical contexts in Japan.
- Distinguishable from 'muda' (waste) and 'shikkō' (expiration).
Using 'Ni Naru'
Always use 'ni naru' when you want to say something *became* invalid because of a deadline.
Kanji Precision
Ensure the 'Mu' kanji has the correct number of horizontal strokes (four in the middle).
Settings Menu
Look for 無効 (mukō) if you need to turn off or disable a feature in a Japanese app.
Polite Rejection
If someone gives you something invalid, say 'mōshiwake arimasen ga, kore wa mukō desu' to be polite.
محتوى ذو صلة
هذه الكلمة بلغات أخرى
مزيد من كلمات academic
絶対的
B2مطلق؛ لا يتوقف على غيره ولا يقبل المقارنة. لديه سلطة مطلقة.
絶対的に
B1بشكل مطلق أو غير مشروط. 'هذا صحيح بشكل مطلق.'
抽象的だ
B1Abstract; existing in thought or as an idea but not having a physical or concrete existence.
抽象
B2موجود في الفكر أو كفكرة ولكن بدون وجود مادي أو ملموس. يشير إلى التعميم أو استخلاص جوهر شيء ما بعيدًا عن التفاصيل المحددة. (الفن التجريدي مثال شائع.)
抽象的に
B1بشكل مجرد أو نظري. يستخدم للأفكار أو المفاهيم، وليس للأشياء المادية.
学術的な
B1متعلق بالدراسة الجامعية الجادة أو البحث أو العلم؛ أكاديمي.
学術的だ
B1أكاديمي؛ متعلق بالتعليم والبحث العلمي. هذا البحث له قيمة أكاديمية كبيرة.
学術的
B2Academic; relating to education and scholarship.
学術
B1الأوساط الأكاديمية، البحث العلمي؛ يتعلق بالمساعي العلمية.
学力
B1القدرة الأكاديمية هي مستوى المعرفة في المواد الدراسية.
