At the A1 level, you don't need to use '紛失' (funshitsu) yourself. Instead, you should focus on the simple word 'なくす' (nakusu). However, you might see '紛失' on signs in Japan, like at a train station or a park. If you see this word, just remember it means 'Lost.' It usually appears near words like '財布' (saifu - wallet) or '鍵' (kagi - key). Think of it as a formal sign that says 'Don't lose your things!' or 'If you lost something, go here.' You might also see it on a button at an ATM if you lose your card. At this stage, just recognize the kanji '失' (lose) and know it relates to missing items. You don't need to worry about the grammar or the 'suru' verb form yet. Just treat it as a label you see in public places. If you are in a shop and lose your bag, just say 'Baggu wo nakushita' (I lost my bag). That is much easier and perfectly fine for a beginner. The word 'funshitsu' is like the word 'Misplacement' or 'Official Loss' in English—it's a bit too big for a first-year student to use, but good to recognize on a poster. Japan has many signs, and '紛失注意' (Watch out for loss) is a very common one. If you see it, check your pockets!
At the A2 level, you are starting to use more 'suru' verbs. '紛失する' (funshitsu suru) is a formal way to say 'to lose something.' You should start to understand that Japanese has different levels of politeness. While 'nakushita' is okay for friends, 'funshitsu shimashita' is what you might say if you are talking to a policeman or a station staff member. You should also learn the compound '紛失届' (funshitsu todoke). This is the 'Lost Property Report.' If you lose your 'Zairyu Card' (Residence Card), you must go to the police and say 'Funshitsu todoke wo dashitai desu' (I want to file a lost property report). This is a very practical phrase for living in Japan. You should also notice that 'funshitsu' is only for things you can touch. Don't use it for losing a game! At A2, you can start using this word in simple formal sentences. For example, 'Kagi wo funshitsu shimashita' (I lost my key). It sounds a bit more 'adult' than using 'nakusu.' You will also see this word in manuals for your phone or bank account. If you see '紛失した時' (When you have lost [it]), that section will tell you what to do. Learning this word now will help you handle emergencies in Japan more smoothly.
At the B1 level, you should be able to distinguish between 'funshitsu,' 'nakusu,' and 'ushinau.' You are now moving into more complex grammar and social contexts. 'Funshitsu' is the word of choice for business and official documentation. For instance, if you are writing an email to your boss about a missing company laptop, using 'nakushimashita' sounds a bit too childish or irresponsible. Using 'funshitsu itashimashita' (humble form) shows that you understand the gravity of losing company property. You should also be comfortable with the noun form being used in phrases like '紛失の恐れがある' (There is a fear of loss). This is common in security warnings. You'll notice that 'funshitsu' is often paired with 'tounan' (theft) in phrases like '紛失・盗難の場合' (In case of loss or theft). This is standard on the back of credit cards and in insurance policies. At this level, you should also be careful not to use 'funshitsu' for abstract concepts like 'losing time' or 'losing a friend.' Those require different verbs. Practice using 'funshitsu' when you are in a professional or administrative environment, and keep 'nakusu' for your personal life. This 'code-switching' is a hallmark of the B1 level.
At the B2 level, you should have a firm grasp of the nuance that 'funshitsu' implies an accidental loss of a physical object that usually requires some sort of follow-up action. You should be able to use it fluently in sentences involving complex particles and conjunctions. For example, '紛失に伴う手続き' (procedures accompanying the loss). You should also understand how 'funshitsu' fits into the broader category of 'shitsu' (loss) words. You might start comparing it with 'ishitsu' (leaving something behind) or 'soushitsu' (deprivation). At this level, you should be able to read news articles or legal terms of service that use 'funshitsu' without hesitation. You'll see it in contexts like 'data funshitsu' (though 'ryuushutsu' is more common for leaks, 'funshitsu' is used if the physical hard drive is gone). You should also be aware of the 'suru-verb' nuances—how 'funshitsu shite iru' (is currently lost) differs from 'funshitsu shita' (lost it at a specific time). Your ability to explain the difference between 'funshitsu' and its synonyms in Japanese is a great way to practice for the JLPT N2 exam, where these subtle distinctions are often tested. You are expected to use this word naturally in any situation involving property, documents, or valuables in a formal or semi-formal setting.
At the C1 level, you are exploring the fine margins of the word '紛失' (funshitsu). You should understand its administrative weight—how it functions as a trigger for legal and corporate protocols. For example, in a legal context, 'funshitsu' might be contrasted with 'shoukyaku' (destruction by fire) or 'messen' (destruction/loss). You should be able to use the word in sophisticated structures like '紛失を未然に防ぐ' (to prevent loss before it happens). Furthermore, you should be sensitive to the register. A C1 learner knows that 'funshitsu' is nearly always neutral and objective; it doesn't carry the 'disappointment' of 'shitsubou' or the 'tragedy' of 'ushinau.' You can use it in high-level business reports to describe logistical failures. You should also be familiar with related technical terms like '紛失物横領罪' (funshitsubutsu ouryou-zai), which is the crime of 'appropriating lost property' (found something and kept it). At this level, your usage should be indistinguishable from a native speaker's in terms of context. You understand that while 'funshitsu' is a common word, its placement in a sentence can change the tone from a simple report to a serious warning. You should also be able to discuss the cultural aspect of 'funshitsu' in Japan—how the 'Koban' system and the 'Ishitsubutsu-hou' create a specific social framework around the concept of losing and finding objects.
At the C2 level, you possess a masterly command of '紛失' (funshitsu) and its place within the Japanese lexicon. You can analyze the word's usage in historical documents versus modern legal codes. You understand that 'funshitsu' is a 'kango' (Chinese-origin word) and thus carries a more formal, academic, and rigid tone than 'yamato-kotoba' (native Japanese words). You can appreciate the nuances in literature where a character might choose 'funshitsu' over 'nakusu' to sound more detached or bureaucratic, perhaps to hide their true emotions about the loss. You are also aware of how the word is used in specialized fields like logistics, where 'funshitsu-in' (rate of loss) might be a key performance indicator. You can effortlessly navigate the most complex honorifics surrounding the word, such as 'funshitsu asareta' or 'funshitsu itashimashita.' At this stage, you might even notice rare or archaic uses in older texts, or how the word's meaning has remained remarkably stable compared to other 'loss' words that have drifted into more abstract or emotional territories. Your understanding is not just about the word itself, but about the entire ecosystem of 'loss' in the Japanese language, allowing you to choose 'funshitsu' with surgical precision to achieve exactly the right tone and legal clarity in any written or spoken communication.

紛失 in 30 Seconds

  • Formal word for losing physical objects like keys, wallets, or ID cards.
  • Used as a noun or a 'suru' verb in professional and official contexts.
  • Commonly found in phrases like 'Lost Property Report' (funshitsu-todoke).
  • Strictly for tangible items; not for losing games, weight, or abstract concepts.

The Japanese word 紛失 (ふんしつ - funshitsu) is a formal and specific noun that translates to 'loss' or 'misplacement' of a physical object. Unlike the more common verb 'nakusu' (なくす), which can be used in almost any context where something is gone, funshitsu is heavily weighted toward administrative, business, and official scenarios. It specifically refers to the act of losing a tangible item, such as a passport, a credit card, a key, or an important document, usually through an accident or carelessness. You won't hear people use this word when talking about losing a soccer game or losing their pride; it is strictly for the 'missing item' category.

Etymology Breakdown
The first kanji, (fun), carries meanings of 'tangled,' 'confused,' or 'distracted.' It suggests a state where things are messy or not where they should be. The second kanji, (shitsu), means 'to lose' or 'to fail.' Together, they paint a picture of an item becoming 'tangled' in the chaos of life and consequently being lost.

In a Japanese business setting, if you lose your employee ID badge, you don't just say 'ID card wo nakushita' to your boss. That sounds a bit too casual, like you dropped a pen. Instead, you would use the term funshitsu to indicate the gravity of the situation. This word implies a certain level of responsibility and the need for a formal report. In fact, the term is most frequently seen in the compound 紛失届 (ふんしつとどけ - funshitsu todoke), which is the 'Lost Property Report' you file at a police box (koban) or a train station service counter.

パスポートを紛失した場合は、すぐに大使館に連絡してください。(If you lose your passport, please contact the embassy immediately.)

The word is also a 'suru-verb' (紛失する), meaning it can function as an action. However, it is almost always the object that is the focus. When you use funshitsu, you are highlighting the fact that the object is currently missing and its whereabouts are unknown. It is less about the 'feeling' of loss and more about the 'status' of the item. This makes it a neutral, objective word perfect for news reports, legal documents, and customer service manuals. If a bank notifies you that they 'lost' your data, they might use a different word like 'ryuushutsu' (leakage), but if you lose your physical cash card, the bank's documentation will invariably use funshitsu.

Social Nuance
In Japan, losing something often brings a sense of 'meiwaku' (trouble caused to others). Therefore, using a formal word like 'funshitsu' acknowledges that the loss is a serious matter that may require administrative effort to resolve.

クレジットカードの紛失による再発行には手数料がかかります。(A fee is charged for reissuing a credit card due to loss.)

Furthermore, the word is often used in the context of 'prevention.' Signs in public lockers often say '紛失にご注意ください' (Please be careful of loss/theft). It serves as a stark reminder that once something is funshitsu, the process of recovery is a formal one. In summary, use this word when the item lost is important, when the setting is formal, or when you are filling out official forms. It is the language of responsibility and official status.

Using 紛失 (funshitsu) correctly requires understanding its grammatical flexibility as both a noun and a suru-verb. When used as a noun, it often acts as the subject or object of a sentence, frequently paired with particles like 'no' (possessive/attributive) or 'ni yoru' (due to). For example, 'funshitsu no osore' means 'the fear of loss.' When used as a verb, it takes the form 'funshitsu suru.' Because it is a formal word, the verb form is often found in polite (desu/masu) or humble language in business communications.

Noun Usage
As a noun, it describes the state or event. Example: 'Kagi no funshitsu' (The loss of the keys). This is often seen in headings, titles, or as part of a compound noun.

重要書類の紛失は、会社の信用に関わります。(The loss of important documents affects the company's credibility.)

One of the most common sentence patterns involves the passive voice or the 'state of being' when an item is lost. For example, 'funshitsu shite shimatta' (I ended up losing it) adds a layer of regret. In a more formal report, you might say 'funshitsu itashimashita,' which is the humble form. It is crucial to note that the object being lost is usually marked with the particle 'wo' (を) when using the verb form: [Object] wo funshitsu suru. However, in passive contexts or when describing the result, you might see [Object] ga funshitsu shite iru (The object is lost).

Common Verb Patterns
1. [Object] wo funshitsu suru (To lose [Object])
2. [Object] wo funshitsu shite shimau (To accidentally lose [Object])
3. [Object] ga funshitsu suru (The [Object] is lost - less common, usually used in technical contexts)

外出中に財布を紛失してしまいました。(I accidentally lost my wallet while I was out.)

In instructional text, you will often see 'funshitsu no sai' (in the event of loss). This is a very common phrase in contracts, terms of service, and instruction manuals. For instance, 'Kado funshitsu no sai wa, tadachi ni teishi tetsuzuki wo okonatte kudasai' (In the event of card loss, please immediately perform the suspension procedure). This pattern is essential for anyone living in Japan or dealing with Japanese bureaucracy. It establishes a clear 'if-then' relationship in a professional tone.

万が一、会員証を紛失された場合は再発行が可能です。(In the unlikely event that you lose your membership card, reissuance is possible.)

Finally, consider the combination with 'todoke' (report). 'Funshitsu-todoke' is a single noun phrase. You don't 'funshitsu' the report; you 'dasu' (submit) or 'teishutsu suru' (formally submit) the report. 'Koban ni funshitsu-todoke wo dashita' (I filed a lost property report at the police box). Understanding this distinction—that 'funshitsu' is the event and 'todoke' is the paperwork—is key to sounding like a native speaker.

You are most likely to encounter 紛失 (funshitsu) in environments that prioritize order, security, and official records. The most common location is the Koban (police box) or the Ishitsubutsu Center (Lost and Found Center) at major train stations like Shinjuku or Tokyo Station. If you approach a police officer because you can't find your bag, they will likely ask, 'Nani wo funshitsu saremashita ka?' (What did you lose?). They use the honorific 'saremasu' because they are speaking to a citizen in an official capacity.

Public Announcements
In department stores or amusement parks, if a child's toy or a valuable item is found, the announcement might say, 'O-nimotsu no funshitsu ni go-chuui kudasai' (Please be careful about losing your belongings) or mention a 'funshitsubutsu' (lost item) has been turned in.

駅のホームで傘の紛失が多発しています。(Losses of umbrellas are occurring frequently on station platforms.)

In the corporate world, funshitsu is a dreaded word. It appears in internal emails regarding security breaches. If a laptop containing sensitive client data is missing, the official subject line will almost certainly contain 'Tanmatsu Funshitsu' (Device Loss). This triggers a series of 'shimatsusho' (apology/explanation letters) and security protocols. Hearing this word in a meeting usually signals a serious problem that needs to be addressed with a formal process, rather than a casual 'Oops, I'll find it later' attitude.

Banking and Finance
When calling a bank to cancel a card, the automated voice menu will often say, 'Kaado no funshitsu・tounan wa bango kyuu wo oshite kudasai' (For card loss or theft, please press nine).

通帳を紛失した際は、直ちに取引銀行へ届け出てください。(When you lose your bankbook, please report it to your bank immediately.)

Lastly, you will see this word on signs in public spaces, particularly near coin lockers, bicycle parking lots, and gym changing rooms. These signs often disclaim responsibility: 'Tounan ya funshitsu ni kanshite wa, issai no seryo wo oimasen' (We bear no responsibility for theft or loss). Here, funshitsu is paired with tounan (theft) to cover all bases of an item going missing. In everyday conversation, friends might use 'nakushita,' but as soon as they start talking about the steps to fix the problem, they'll switch to 'funshitsu' to describe the official state of the item.

One of the most frequent mistakes English speakers make with 紛失 (funshitsu) is using it for non-physical losses. In English, we use 'lose' for everything: losing a game, losing weight, losing a job, losing hope, or losing a person (death). In Japanese, funshitsu is strictly reserved for tangible objects. If you say 'shiai wo funshitsu shita' to mean 'I lost the match,' a Japanese person will be very confused, perhaps imagining you literally misplaced the physical game disc or a trophy.

Mistake 1: Abstract Loss
Incorrect: 'Kibou wo funshitsu shita' (I lost hope).
Correct: 'Kibou wo ushinatta' (I lost hope - using 'ushinau').

Another common error is confusing funshitsu with shitsubou (disappointment) or shitsugyou (unemployment) because they all start with or contain the 'shitsu' (loss) kanji. While they share a root meaning, their applications are totally different. Shitsubou is an emotion; shitsugyou is a social status; funshitsu is a logistical event. Always double-check if what you 'lost' is something you can hold in your hand.

❌ 試合に紛失した。
✅ 試合に負けた。(I lost the match.)

Mistake 2: Over-formality
Using 'funshitsu' in a casual conversation with friends can sound stiff or robotic. If you can't find your eraser during a test, saying 'keshigomu wo funshitsu shimashita' is technically correct but sounds like you're filing a police report for a 100-yen item. In these cases, 'nakushita' is much more natural.

❌ 友達に借りたペンを紛失した。
✅ 友達に借りたペンをなくしちゃった。(I accidentally lost the pen I borrowed from my friend.)

Lastly, learners sometimes confuse funshitsu (loss) with ishitsu (lost/left behind). While they are similar, ishitsu is the legal term for 'lost property' (ishitsubutsu). You 'funshitsu' (lose) the item, and then the item becomes an 'ishitsubutsu' (lost article) in the eyes of the law. You don't usually say 'I ishitsu-ed my wallet.' You say 'I funshitsu-ed my wallet.' Keeping the verb and the noun-status separate will help you navigate these high-level vocabulary waters.

Japanese has several ways to say 'loss,' and choosing the right one depends entirely on the context and the 'what' that is being lost. The most direct alternative to 紛失 (funshitsu) is 無くす (nakusu). This is the 'all-purpose' verb. It can be used for physical objects, abstract things (like confidence), and in casual or formal speech. If you are ever in doubt, 'nakusu' is the safest choice, though it lacks the professional precision of 'funshitsu.'

Comparison: 紛失 vs. 無くす
紛失: Formal, strictly physical objects, implies administrative consequence.
無くす: General, physical or abstract, used in daily life.

Another high-level synonym is 失う (ushinau). This word is more literary and often deals with significant or permanent losses. While you can 'ushinau' a physical object, it's more commonly used for losing a loved one, losing one's life, losing an opportunity, or losing trust. It carries a heavy emotional weight that funshitsu completely lacks. Use 'ushinau' when the loss feels like a tragedy; use 'funshitsu' when the loss feels like a paperwork problem.

彼は事故で視力を失った。(He lost his eyesight in an accident. - Poetic/Serious loss)

Then there is 遺失 (ishitsu). This is a legal term. You will see it in the 'Ishitsubutsu-hou' (Lost Property Act). In daily life, you'll mostly see it at the 'Ishitsubutsu Center' (Lost and Found). It specifically refers to items left behind in public places. While 'funshitsu' focuses on the act of losing, 'ishitsu' focuses on the item being left behind. If you leave your bag on a train, the railway company considers it an 'ishitsubutsu.'

Other Related Terms
1. 喪失 (soushitsu): Total loss or deprivation (e.g., loss of memory, loss of rights).
2. 消失 (shoushitsu): Disappearance/vanishing (e.g., a building lost in a fire).
3. 浪費 (rouhi): To lose/waste time or money.

Finally, consider 置き忘れ (okiwasure). This means 'leaving something behind' (forgetting to pick it up). Often, what we call 'funshitsu' is actually 'okiwasure.' If you know you left your phone at a cafe, 'okiwasure' is more accurate. If it just vanished from your pocket and you have no idea where it is, 'funshitsu' is the better term. Choosing between these words shows that you understand not just the 'what' of the loss, but the 'how' and 'where' as well.

How Formal Is It?

Fun Fact

The kanji 紛 (fun) contains the 'silk' radical (糸) on the left, suggesting tangled threads, which metaphorically represents the 'confusion' that leads to losing an item.

Pronunciation Guide

UK /fɯn.ɕi.tsɯ/
US /fun.ʃi.tsu/
Heiban (Flat) pitch accent. The pitch stays relatively level throughout the word.
Rhymes With
Shinjitsu (Truth) Kinjitsu (Recent days) Genshitsu (Substance) Honshitsu (Essence) Kashitsu (Error) Seishitsu (Nature/Character) Toshitsu (Sugar) Shishitsu (Quality)
Common Errors
  • Pronouncing 'fu' like an English 'foo' with rounded lips. In Japanese, it's a soft breath.
  • Stress on the first syllable. Keep it flat.
  • Over-pronouncing the final 'u'. It should be very faint.
  • Confusing 'fun' with 'hun'.
  • Mixing up the 'shitsu' with 'shisetsu'.

Difficulty Rating

Reading 4/5

The kanji 紛 is somewhat rare outside of this word and 'magireru.' Shitsu is common.

Writing 5/5

Writing 紛 requires attention to the silk radical and the right-hand side strokes.

Speaking 3/5

Pronunciation is straightforward, but knowing when to use it over 'nakusu' is tricky.

Listening 3/5

Common in announcements and official settings, so it's easy to catch.

What to Learn Next

Prerequisites

失う (ushinau) 無くす (nakusu) 警察 (keisatsu) 書類 (shorui) 届ける (todokeru)

Learn Next

盗難 (tounan) 遺失 (ishitsu) 捜索 (sousaku) 再発行 (sai-hakkou) 悪用 (akuyou)

Advanced

損失 (sonshitsu) 消失 (shoushitsu) 喪失 (soushitsu) 失墜 (shittsui) 失策 (shissaku)

Grammar to Know

Suru-verbs (Group 3)

紛失する (To lose), 紛失した (Lost).

Noun + no + Noun

財布の紛失 (Loss of a wallet).

Passive Voice for Inanimate Objects

書類が紛失された (The documents were lost - formal).

Te-shimau (Accidental action)

紛失してしまった (Ended up losing it).

Baai (In the case of)

紛失した場合は (In the case of loss).

Examples by Level

1

かぎをふんしつしました。

I lost the key.

Simple polite form of the verb.

2

さいふをふんしつしましたか?

Did you lose your wallet?

Question form using 'ka'.

3

ここはふんしつぶつセンターです。

This is the lost property center.

Compound noun 'funshitsubutsu' (lost item).

4

ふんしつにちゅういしてください。

Please be careful not to lose things.

Noun + 'ni chuui' (be careful of).

5

カードをふんしつしました。

I lost my card.

Direct object marked with 'wo'.

6

だいじなものをふんしつしました。

I lost something important.

Adjective 'daiji-na' modifying 'mono'.

7

ふんしつしたときは、いってください。

When you lose it, please tell me.

Using 'toki' (when) with the past tense.

8

かさのふんしつがおおいです。

There are many losses of umbrellas.

Noun 'funshitsu' as a subject.

1

パスポートを紛失したので、警察に行きます。

I lost my passport, so I'm going to the police.

Using 'node' to explain a reason.

2

紛失届を書いてください。

Please write a lost property report.

Te-form for a polite request.

3

大切な書類を紛失してしまいました。

I accidentally lost important documents.

Te-shimau form indicating regret or accident.

4

カバンを紛失した場所を覚えていますか?

Do you remember the place where you lost your bag?

Relative clause modifying 'basho' (place).

5

紛失したカードはすぐに止めてください。

Please stop the lost card immediately.

Noun modification with past tense verb.

6

駅で傘を紛失する人が多いです。

Many people lose umbrellas at the station.

Simple present tense for habitual actions.

7

もし紛失したら、私に連絡してください。

If you lose it, please contact me.

Conditional 'tara' (if).

8

紛失した物はまだ見つかりません。

The lost item hasn't been found yet.

Negative 'mitsu-karimasen' (not found).

1

社員証を紛失した場合は、再発行の手続きが必要です。

In the event that you lose your employee ID, reissuance procedures are necessary.

Formal conditional 'baai' (in the case of).

2

紛失の恐れがあるため、貴重品は持ち歩かないでください。

Because there is a risk of loss, please do not carry valuables with you.

Noun 'osore' (fear/risk) combined with 'funshitsu'.

3

荷物の紛失に関して、航空会社に問い合わせた。

I inquired with the airline regarding the loss of my luggage.

Compound particle 'ni kanshite' (regarding).

4

昨日、不注意で財布を紛失してしまった。

Yesterday, I accidentally lost my wallet due to carelessness.

Adverbial 'fuchuui de' (carelessly).

5

紛失した鍵が見つかるまで、家に入れません。

Until the lost key is found, I cannot enter the house.

Conjunction 'made' (until).

6

この窓口では、紛失物の受付を行っています。

This counter accepts reports of lost items.

Formal verb 'okonau' (to conduct/perform).

7

万が一紛失しても、バックアップがあれば安心だ。

Even if it's lost, you're safe if you have a backup.

Conditional 'te-mo' (even if).

8

紛失したと思っていたペンが、カバンの底から出てきた。

The pen I thought I'd lost turned up at the bottom of my bag.

Quotative 'to omotte ita' (thought that...).

1

重要書類の紛失は、企業の社会的信用を損なう恐れがあります。

The loss of important documents may damage a company's social credibility.

Formal noun phrase as a subject.

2

紛失の状況を詳しく説明してください。

Please explain the circumstances of the loss in detail.

Noun 'joukyou' (circumstances/situation).

3

物品を紛失した際は、速やかに担当者に報告すること。

When an item is lost, report it to the person in charge immediately.

Formal imperative 'koto' at the end of a sentence.

4

紛失による損害を補償する保険に加入しています。

I am enrolled in insurance that compensates for damages caused by loss.

Compound particle 'ni yoru' (due to).

5

配送中に荷物が紛失した疑いがある。

There is a suspicion that the package was lost during delivery.

Noun 'utagai' (suspicion).

6

公共の場での貴重品の紛失には、細心の注意を払うべきだ。

One should pay the utmost attention to the loss of valuables in public places.

Auxiliary verb 'beki da' (should).

7

紛失したデータの復旧は、ほぼ不可能です。

Recovery of the lost data is almost impossible.

Noun 'fukkyuu' (recovery/restoration).

8

彼は不注意から、借りた本を紛失してしまった。

Due to his carelessness, he ended up losing the book he borrowed.

Particle 'kara' indicating a cause or reason.

1

証券を紛失した場合には、除権決定の手続きが必要となる。

In the event of the loss of securities, a procedure for a judgment of nullification is required.

Legal terminology 'joken kettei' (nullification judgment).

2

紛失物の所有権がいつ消滅するかは、法律で定められている。

When the ownership rights of a lost item expire is determined by law.

Noun 'shouyuuken' (ownership rights) and verb 'shoumetsu' (extinguish/expire).

3

機密情報の紛失は、国家安全保障に関わる重大な事態だ。

The loss of classified information is a grave situation affecting national security.

Formal phrase 'ni kakawaru' (concerning/affecting).

4

紛失の原因を究明し、再発防止策を講じる必要がある。

It is necessary to investigate the cause of the loss and take measures to prevent recurrence.

Formal verb 'kyuumei suru' (investigate/clarify).

5

紛失届の受理番号を控えておいてください。

Please keep a record of the lost property report's reception number.

Noun 'juri bango' (reception number).

6

その古文書は、戦火の中で紛失したと伝えられている。

It is said that the ancient document was lost during the fires of war.

Passive voice 'tsutaerarete iru' (it is said/conveyed).

7

紛失を装って保険金を請求するのは、詐欺行為にあたる。

Faking a loss to claim insurance money constitutes a fraudulent act.

Verb 'yosoou' (to pretend/fake).

8

紛失した可能性のある場所を、徹底的に捜索した。

We thoroughly searched the locations where it might have been lost.

Adverb 'tetteiteki ni' (thoroughly) and verb 'sousaku suru' (search).

1

紛失という事象が、単なる過失を超えて組織の構造的問題を露呈させた。

The incident of loss went beyond mere negligence and exposed structural problems within the organization.

Abstract noun 'jishou' (phenomenon/event) and verb 'rotei saseru' (to expose).

2

民法における紛失物の定義と、遺失物法の規定を照らし合わせる。

Compare the definition of lost property in the Civil Code with the provisions of the Lost Property Act.

Formal phrase 'ni okeru' (in/as for) and 'terashiawaseru' (compare/check against).

3

紛失した文化財の行方は、今なお謎に包まれている。

The whereabouts of the lost cultural asset remain shrouded in mystery to this day.

Noun '行方' (whereabouts) and 'nazo ni tsutsumarete iru' (shrouded in mystery).

4

デジタルデータの紛失は、物理的な紛失とは異なる法解釈を要する。

The loss of digital data requires a legal interpretation different from that of physical loss.

Formal verb 'yousuru' (to require).

5

紛失届の虚偽記載は、公文書偽造罪に問われる可能性がある。

False entries in a lost property report may lead to charges of forging official documents.

Legal phrase 'tsumi ni towareru' (to be charged with a crime).

6

紛失による経済的損失の算定は、極めて困難な作業である。

Calculating the economic loss due to disappearance is an extremely difficult task.

Formal copula 'de aru'.

7

紛失した記憶の断片を、催眠療法で呼び起こそうとした。

They tried to recall fragments of lost memories through hypnotherapy.

Metaphorical use of 'funshitsu' in a psychological/medical context.

8

紛失を理由とした契約解除の妥当性を、法廷で争う。

The validity of terminating a contract on the grounds of loss will be contested in court.

Noun 'datousei' (validity/propriety).

Synonyms

遺失 喪失 消失 なくすこと

Antonyms

発見 回収 拾得

Common Collocations

紛失届を出す
紛失の恐れ
重要書類の紛失
紛失物センター
紛失・盗難
紛失により
紛失した際
データの紛失
紛失を未然に防ぐ
紛失を装う

Common Phrases

紛失届

— A lost property report filed with the police or an office.

交番で紛失届を書きました。

紛失物

— A lost item or article.

紛失物が見つかりました。

紛失注意

— A warning to be careful of losing things.

「紛失注意」の看板がある。

カード紛失

— The loss of a credit or bank card.

カード紛失専用ダイヤルに電話する。

紛失防止

— Prevention of loss.

紛失防止タグをカバンにつける。

紛失中

— Currently in a state of being lost.

その書類は現在紛失中です。

紛失証明書

— A certificate proving that something was lost.

再発行には紛失証明書が必要です。

紛失の疑い

— Suspicion of loss.

紛失の疑いがあるため調査する。

紛失現場

— The scene or location where something was lost.

紛失現場に戻ってみる。

紛失の連絡

— Notification of loss.

銀行に紛失の連絡を入れた。

Often Confused With

紛失 vs 失う (ushinau)

Ushinau is for abstract or emotional loss; funshitsu is for physical objects.

紛失 vs 失望 (shitsubou)

Shitsubou means disappointment; it shares the 'shitsu' kanji but has a different meaning.

紛失 vs 失敗 (shippai)

Shippai means failure; also shares 'shitsu' but is unrelated to losing objects.

Idioms & Expressions

"紛失したと思って諦める"

— To give up, thinking something is lost forever.

紛失したと思って諦めていた財布が見つかった。

Neutral
"紛失は不徳の致すところ"

— Losing something is a result of my own lack of virtue (formal apology).

今回の紛失は、私の不徳の致すところです。

Very Formal
"跡形もなく紛失する"

— To be lost without a trace.

証拠が跡形もなく紛失してしまった。

Literary
"紛失の責任を問われる"

— To be held responsible for a loss.

重要データの紛失の責任を問われた。

Business
"紛失に紛失を重ねる"

— To lose things one after another (uncommon but descriptive).

彼は紛失に紛失を重ねるおっちょこちょいだ。

Informal
"紛失の憂き目に遭う"

— To encounter the bitter experience of losing something.

旅先でパスポート紛失の憂き目に遭った。

Literary
"紛失が命取りになる"

— The loss becomes a fatal blow (to a career or goal).

この書類の紛失は会社にとって命取りになる。

Business
"紛失を隠蔽する"

— To cover up a loss.

彼はミスの紛失を隠蔽しようとした。

Formal
"紛失して途方に暮れる"

— To be at a total loss after losing something.

財布を紛失して途方に暮れている。

Neutral
"紛失の形跡がない"

— There is no evidence of loss (suggesting it might be something else).

部屋には紛失の形跡が全くない。

Formal

Easily Confused

紛失 vs 無くす (nakusu)

Both mean 'to lose.'

Nakusu is casual and covers abstract things; Funshitsu is formal and only for physical things.

自信をなくす (Lose confidence) vs 財布を紛失する (Lose a wallet).

紛失 vs 遺失 (ishitsu)

Both are formal terms for losing objects.

Ishitsu is a legal term specifically for items left behind; Funshitsu is a general formal term for losing.

遺失物 (Lost property) vs 紛失届 (Lost property report).

紛失 vs 消失 (shoushitsu)

Both involve something being 'gone.'

Shoushitsu means to vanish or be destroyed (e.g., in a fire); Funshitsu means to misplace.

証拠が消失した (The evidence was destroyed) vs 鍵を紛失した (I misplaced the keys).

紛失 vs 損失 (sonshitsu)

Both mean 'loss.'

Sonshitsu is used for financial or material loss/damage; Funshitsu is for misplacing an object.

多額の損失 (A large financial loss) vs カバンの紛失 (Loss of a bag).

紛失 vs 喪失 (soushitsu)

Both mean 'loss.'

Soushitsu is used for the loss of rights, memory, or abstract status; Funshitsu is for physical items.

記憶喪失 (Memory loss) vs 携帯の紛失 (Loss of a phone).

Sentence Patterns

A1

[Object] を 紛失しました。

かぎを紛失しました。

A2

[Object] を 紛失したので、[Action]。

財布を紛失したので、警察に行きます。

B1

[Object] の 紛失に 注意してください。

貴重品の紛失に注意してください。

B2

[Object] を 紛失した 際は、[Action]。

カードを紛失した際は、すぐにお電話ください。

C1

[Object] の 紛失に 伴い、[Result]。

書類の紛失に伴い、再発行の手続きが必要です。

C1

[Object] の 紛失を 未然に 防ぐ。

データの紛失を未然に防ぐ。

C2

[Object] の 紛失が [Status] を 露呈させた。

証拠の紛失が管理の甘さを露呈させた。

C2

[Object] 紛失の 妥当性を 争う。

契約解除の妥当性を争う。

Word Family

Nouns

紛失 (funshitsu) - Loss
紛失物 (funshitsubutsu) - Lost item
紛失届 (funshitsu todoke) - Lost property report

Verbs

紛失する (funshitsu suru) - To lose
紛失させる (funshitsu saseru) - To cause to lose
紛失される (funshitsu sareru) - To have something lost (passive)

Adjectives

紛失した (funshitsu shita) - Lost (used as a modifier)

Related

紛れる (magireru) - To be confused with/mixed in
失う (ushinau) - To lose
失念 (shitsunen) - To forget (formal)
遺失 (ishitsu) - Legal loss
過失 (kashitsu) - Negligence

How to Use It

frequency

Common in official contexts, news, and business; less common in casual daily speech.

Common Mistakes
  • Using 'funshitsu' for losing a sports match. 試合に負けました (Shiai ni makemashita).

    'Funshitsu' is only for physical objects. 'Makeru' is for losing a contest.

  • Using 'funshitsu' for losing weight. 体重が減りました (Taijuu ga herimashita).

    'Funshitsu' refers to misplacing property, not bodily changes.

  • Confusing 'funshitsu' with 'shitsubou' (disappointment). 紛失 (Loss of object) vs 失望 (Disappointment).

    They share one kanji but are completely different concepts. One is logistical, the other emotional.

  • Using 'funshitsu' for a very trivial item in casual talk. 消しゴムをなくした (Keshigomu wo nakushita).

    Saying 'funshitsu shimashita' for an eraser sounds like you're calling a press conference for a tiny mistake.

  • Using 'funshitsu' when you mean 'leakage' of info. 情報の漏洩 (Jouhou no rouei).

    If the data was hacked/leaked, use 'rouei.' If the USB stick is gone, use 'funshitsu.'

Tips

Use for Valuables

Reserve 'funshitsu' for things that matter, like credit cards, IDs, or important files. Using it for a cheap pencil sounds funny.

The Suru-Verb Connection

Remember it's a 'suru' verb. You can say 'funshitsu shimashita' (I lost it) or 'funshitsu shite iru' (It is currently lost).

Learn the Compounds

Words like 'funshitsu-todoke' (report) and 'funshitsubutsu' (lost item) are extremely common. Learn them as set phrases.

Business Etiquette

If you lose company property, always use 'funshitsu' in your apology. It shows you recognize the professional impact of the loss.

The Koban Connection

If you use the word 'funshitsu' at a police box, they will immediately know you need to fill out a specific form.

Physical Only

Never use 'funshitsu' for losing a game, a friend, or your pride. Keep it strictly to things you can drop or misplace.

Kanji Precision

The 'shitsu' (失) in 'funshitsu' is the same as in 'shitsubou' (disappointment), but the 'fun' (紛) makes it specific to 'confusion/tangling'.

Station Announcements

Train stations often announce 'funshitsu-butsu' (lost items). If you hear your bag described, head to the window!

Fun-Sheet-Loss

Imagine having 'FUN' with a 'SHEET' of paper and then 'LOSING' it. Fun-Shitsu!

Check the Back of Cards

Look at your Japanese credit card or bank book. You will likely see the word '紛失' in the emergency contact section.

Memorize It

Mnemonic

Think of 'FUN' (紛) and 'SHITSU' (失). If you're having too much 'FUN,' you might lose your 'SHITSU' (stuff).

Visual Association

Imagine a pair of tangled headphones (紛) next to an empty pocket (失).

Word Web

Police Wallet Passport Report Bureaucracy Accident Tangible Formal

Challenge

Try to find a 'Lost Property' sign in a Japanese station or online and identify the word '紛失'.

Word Origin

Derived from Middle Chinese (Kango). The word entered Japanese during the period when Chinese administrative and legal terms were being adopted.

Original meaning: To be confused and lose something.

Sino-Japanese (Kango)

Cultural Context

Be careful when using 'funshitsu' regarding company property; it implies a serious lapse in professional duty.

In English, we often say 'I lost my...' in any setting. In Japan, switching to 'funshitsu' marks you as a responsible adult in official situations.

Ishitsubutsu-hou (The Lost Property Law of Japan) Koban (The ubiquitous police boxes where funshitsu-todoke are filed) Shinjuku Station Lost and Found (famous for handling thousands of funshitsubutsu daily)

Practice in Real Life

Real-World Contexts

At the Police Box (Koban)

  • 紛失届を出したいのですが。
  • 財布を紛失しました。
  • 紛失した場所は分かりません。
  • 紛失物の特徴を教えます。

At the Office

  • 社員証を紛失してしまいました。
  • 紛失の経緯を報告します。
  • 重要書類の紛失に注意してください。
  • 紛失による情報漏洩の確認をします。

Banking/Credit Cards

  • カードの紛失・盗難窓口です。
  • 紛失したカードを止めてください。
  • 紛失による再発行の手数料はいくらですか?
  • 通帳の紛失に気づきました。

Public Transportation

  • 電車の中に忘れ物(紛失物)はありますか?
  • 切符を紛失してしまったのですが。
  • 紛失物センターの電話番号を教えてください。
  • 荷物の紛失を防ぐためのアナウンス。

Legal/Insurance

  • 紛失証明書を発行してください。
  • 紛失は保険の対象外です。
  • 紛失届の受理番号が必要です。
  • 紛失による損害賠償。

Conversation Starters

"日本で何かを紛失したことはありますか? (Have you ever lost something in Japan?)"

"紛失届を書くのは難しいと思いますか? (Do you think writing a lost property report is difficult?)"

"もしパスポートを紛失したら、どうしますか? (What would you do if you lost your passport?)"

"紛失物センターに行ったことがありますか? (Have you ever been to a lost property center?)"

"紛失防止のために、どんな工夫をしていますか? (What kind of precautions do you take to prevent loss?)"

Journal Prompts

今日、何かを紛失して困った時のことを書いてください。 (Write about a time you were in trouble because you lost something today.)

紛失した財布が戻ってきた時の気持ちを想像して書いてください。 (Imagine and write about your feelings when a lost wallet was returned.)

会社で重要書類を紛失してしまった時の謝罪メールを練習してください。 (Practice writing an apology email for losing important documents at work.)

日本の「紛失物」に対する文化についてどう思いますか? (What do you think about Japan's culture regarding 'lost items'?)

紛失を防ぐための新しいテクノロジーについて意見を書いてください。 (Write your opinion on new technology for preventing loss.)

Frequently Asked Questions

10 questions

No, you cannot. For losing a game or match, use 'makeru' (負ける). 'Funshitsu' is only for physical objects like keys or documents. Using it for a game would sound very strange to a native speaker.

It is a 'Lost Property Report.' You file this at a police box (koban) or a station if you lose something. It is a formal document that helps the police return your item if someone finds it.

Yes, much more formal. 'Nakusu' is the everyday word. 'Funshitsu' is used in business, legal documents, and official announcements. If you are at work, 'funshitsu' is the better choice.

No. For losing weight, use 'yaseru' (痩せる) or 'taijuu ga heru' (体重が減る). 'Funshitsu' is specifically for misplacing things you own.

First, go to the nearest 'Koban' and file a 'funshitsu-todoke.' Then, take the receipt or report number to your embassy to apply for a replacement. 'Funshitsu' is the official term you will use throughout this process.

Not necessarily. 'Funshitsu' usually implies you lost it by accident. If you think it was stolen, you should use 'tounan' (盗難). Often, signs say 'funshitsu・tounan' to cover both possibilities.

Yes, in a formal context like 'data funshitsu' (data loss). However, if the data was leaked, 'ryuushutsu' (leakage) is more common. If the physical drive is gone, 'funshitsu' is perfect.

Yes. 'Okiwasure' means 'leaving something behind' (forgetting it). 'Funshitsu' is a broader term for 'loss' where the item is missing and you don't necessarily know why or where.

You would say, '[Object] wo funshitsu shite shimai, moushiwake gozaimasen.' Using 'funshitsu' instead of 'nakushite' makes the apology sound more sincere and professional.

The most common opposites are 'hakken' (discovery/finding) or 'shuutoku' (picking up/finding lost property). If you find something someone else lost, you are a 'shuutokusha' (finder).

Test Yourself 200 questions

writing

Translate to Japanese: 'I lost my key at the station.' (Polite)

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writing

Translate to Japanese: 'Please be careful not to lose your valuables.'

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writing

Translate to Japanese: 'I want to file a lost property report.'

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writing

Translate to Japanese: 'I accidentally lost an important document.'

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writing

Translate to Japanese: 'Where is the lost and found center?'

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writing

Translate to Japanese: 'In case of loss, please contact us immediately.'

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writing

Translate to Japanese: 'The loss of data is a serious problem.'

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writing

Translate to Japanese: 'I found the wallet I thought I lost.'

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writing

Translate to Japanese: 'We must prevent the loss of information.'

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writing

Translate to Japanese: 'A fee is required for reissuing a lost card.'

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writing

Translate to Japanese: 'I lost my employee ID yesterday.'

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writing

Translate to Japanese: 'There is a risk of losing small parts.'

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writing

Translate to Japanese: 'Please tell me the circumstances of the loss.'

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writing

Translate to Japanese: 'I filed a report at the police box.'

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writing

Translate to Japanese: 'The evidence was lost during the war.'

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writing

Translate to Japanese: 'I am looking for a lost item.'

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writing

Translate to Japanese: 'It is my responsibility that I lost it.'

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writing

Translate to Japanese: 'The whereabouts of the lost painting are unknown.'

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writing

Translate to Japanese: 'Please don't lose this ticket.'

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writing

Translate to Japanese: 'Loss prevention is important.'

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speaking

Say: 'I lost my wallet.' (Polite)

Read this aloud:

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speaking

Say: 'Where is the lost property report?'

Read this aloud:

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speaking

Say: 'I accidentally lost my keys.'

Read this aloud:

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speaking

Say: 'Please be careful of loss.'

Read this aloud:

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speaking

Say: 'I lost an important document at work.'

Read this aloud:

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speaking

Say: 'What should I do if I lose my card?'

Read this aloud:

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speaking

Say: 'I want to go to the lost and found center.'

Read this aloud:

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speaking

Say: 'I lost my passport during the trip.'

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Say: 'I filed a report at the police box.'

Read this aloud:

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speaking

Say: 'Is there a fee for reissuing a lost ID?'

Read this aloud:

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speaking

Say: 'I am worried about losing my data.'

Read this aloud:

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speaking

Say: 'I found the lost item.'

Read this aloud:

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speaking

Say: 'Please explain the circumstances of the loss.'

Read this aloud:

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speaking

Say: 'The loss of the key is my fault.'

Read this aloud:

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speaking

Say: 'I am using a loss prevention tag.'

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Say: 'I apologize for losing the documents.'

Read this aloud:

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speaking

Say: 'I need a loss certificate.'

Read this aloud:

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speaking

Say: 'I lost it somewhere near the station.'

Read this aloud:

Correct! Not quite. Correct answer:
speaking

Say: 'Please don't lose this ticket.'

Read this aloud:

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speaking

Say: 'We are investigating the cause of the loss.'

Read this aloud:

Correct! Not quite. Correct answer:
listening

Listen and transcribe: '財布を紛失しました。'

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Listen and transcribe: '紛失届を書いてください。'

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Listen and transcribe: '貴重品の紛失に注意。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: '紛失物が見つかりました。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: 'カードを紛失した際はご連絡を。'

Correct! Not quite. Correct answer:
Correct! Not quite. Correct answer:
listening

Listen and transcribe: '重要書類を紛失してしまった。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: '紛失物センターはあちらです。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: '再発行には紛失証明が必要です。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: 'データの紛失を防ぎましょう。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: '紛失の原因を教えてください。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: '不注意による紛失。'

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listening

Listen and transcribe: '紛失防止タグを購入した。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: '紛失した場所を覚えていますか?'

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listening

Listen and transcribe: '荷物の紛失が多発している。'

Correct! Not quite. Correct answer:
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listening

Listen and transcribe: '紛失を未然に防ぐ。'

Correct! Not quite. Correct answer:
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/ 200 correct

Perfect score!

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