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B1 verb #5,000 most common 9 min read

紛失する

funshitsu suru
Practice it Examples Notes & Tips 紛失する in 30 Seconds
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Practice it Examples Notes & Tips

紛失する in 30 Seconds

  • 紛失する means to lose something, usually a tangible item.
  • It's more formal than なくす and implies a definite loss.
  • Commonly used in official reports and announcements.
  • Often paired with regretful expressions like てしまいました.
The Japanese verb 紛失する (funshitsu suru) means 'to lose' or 'to misplace' something. It is often used when an item has been lost and is unlikely to be found, or when reporting a lost item to authorities or a company. It carries a slightly more formal tone than simply saying something is gone. You might use this verb when you've lost your wallet, keys, a document, or even a pet. The nuance is that the item is gone, and the focus is on the act of losing it. It's not typically used for abstract things like losing hope or losing a game, but rather for tangible objects. The kanji 紛 (fun) means 'confusion' or 'disorder,' and 失 (shitsu) means 'loss' or 'fault,' so the word literally implies a loss that has occurred amidst some confusion or disorder, making it harder to recover.
Consider the feeling of panic and frustration when you realize something important is missing. This verb captures that sense of loss. For example, if you leave your umbrella on the train, you might say, "傘を紛失してしまいました" (Kasa o funshitsu shite shimaimashita) - 'I've lost my umbrella.' This implies it's not just temporarily misplaced but truly gone. Similarly, if you lose your passport while traveling, reporting it would likely involve this term. The context is usually one where the loss has a significant impact or requires official notification.
It's important to distinguish 紛失する from other ways of saying 'lose.' For instance, なくす (nakusu) is a more general and common verb for 'to lose,' and can be used in a wider range of situations, including losing something temporarily or even losing face. 紛失する, on the other hand, suggests a more definitive or serious loss, often of a valuable or important item. The formality of 紛失する makes it suitable for official reports, business contexts, or when speaking with a degree of seriousness about the lost item. It's the kind of word you'd see in a lost and found notice or a police report.
Think about the difference between misplacing your keys for a few minutes versus losing them entirely. If you've misplaced them, you might say "鍵がどこかに行っちゃった" (Kagi ga dokoka ni itchattā) - 'My keys have gone somewhere.' But if you've searched everywhere and they are truly gone, perhaps you'd report them as lost using 紛失する. The verb implies a more permanent state of absence. This distinction is crucial for conveying the exact nuance of the situation.
The use of 紛失する also often implies that the item was in your care or possession and has now been lost. It's not typically used when something is stolen, though the outcome is similar. The focus is on the unintentional disappearance of the item. For example, if a company loses a client's data, they might use this verb in an apology. It's a word that signifies a regrettable and often inconvenient event.
The verb 紛失する is typically used in its masu-form (紛失します - funshitsu shimasu) or its past tense (紛失しました - funshitsu shimashita) in everyday conversation and formal writing. It can also be used in its plain form (紛失する - funshitsu suru) in less formal writing or when making general statements. When expressing regret or a sense of helplessness, the auxiliary verb てしまう (te shimau) is often attached, creating forms like 紛失してしまいました (funshitsu shite shimaimashita), which translates to 'I ended up losing...' or 'I've lost it (unfortunately).'
The direct object of 紛失する is usually marked with the particle を (o). For example, "鍵を紛失しました" (Kagi o funshitsu shimashita) means 'I lost my keys.' The subject is often omitted if it's clear from context, typically being 'I' or 'we.' In more formal situations, like a report, the subject might be explicitly stated. You can also use it with potential forms, like 紛失する可能性がある (funshitsu suru kanōsei ga aru - there is a possibility of losing it), though this is less common for the verb itself and more for describing a risk.
Consider the sentence structure: Subject (often omitted) + Object + を + 紛失する/します/しました. For instance, if a company is writing a notice about lost property, they might say: "お客様の持ち物を紛失しないよう、十分ご注意ください" (Okyakusama no mochimono o funshitsu shinai yō, jūbun gochūi kudasai) - 'Please be careful enough not to lose our customers' belongings.' This uses the negative potential form with a warning.
Another common pattern is to use it in clauses describing the consequence of losing something. For example, "もし携帯電話を紛失したら、すぐに警察に届け出てください" (Moshi keitai denwa o funshitsu shitara, sugu ni keisatsu ni todokede kudasai) - 'If you lose your mobile phone, please report it to the police immediately.' Here, the conditional form 紛失したら (funshitsu shitara) is used. The verb is versatile in its grammatical applications, fitting into various sentence structures to express the idea of loss.
It's also common to hear it in passive voice constructions, although 紛失する itself is often used transitively. However, when reporting something that *has been* lost, the active voice is more common. For example, "貴重品は紛失しないように管理してください" (Kichōhin wa funshitsu shinai yō ni kanri shite kudasai) - 'Please manage your valuables so as not to lose them.' This is a command or request using the negative form.
You'll most commonly encounter 紛失する in formal or official settings. This includes announcements in public places like train stations, airports, and shopping malls, especially when reporting lost items or making public appeals for their return. For example, a station announcer might say, "本日、〇〇線にて〇〇様がお忘れ物の傘を紛失されたとのことです" (Honjitsu, marumaru sen nite marumaru-sama ga owasuremono no kasa o funshitsu sareta to no koto desu) - 'Today, it is reported that Mr./Ms. [Name] lost the umbrella they left on the [Line] line.'
Another frequent context is in official documents and reports. If you lose your passport, driver's license, or any important identification, you will likely need to fill out a 紛失届 (funshitsu todoke) - a 'lost item report.' Police stations and administrative offices are places where this term is very common. When reporting a lost item to the police, you would say, "財布を紛失しました" (Saifu o funshitsu shimashita) - 'I lost my wallet.'
In business settings, especially when dealing with customer service or handling sensitive information, 紛失する might be used. A company might issue a statement acknowledging that they have accidentally lost customer data, using a phrase like "顧客情報を紛失した可能性があり、深くお詫び申し上げます" (Kokyaku jōhō o funshitsu shita kanōsei ga ari, fukaku owabi mōshiagemasu) - 'There is a possibility that customer information has been lost, and we deeply apologize.' This highlights the formal and serious nature of the verb.
You might also hear it in news reports discussing incidents involving lost items, especially if they are of significant value or public interest. For instance, a news segment about a valuable artifact going missing from a museum would likely use this verb. The formal tone makes it suitable for broadcasting and journalistic reporting where precision and a degree of gravitas are required.
In academic or legal contexts, when discussing negligence or responsibility related to lost property, 紛失する would be the appropriate term. For example, a legal document might refer to the 'failure to prevent the loss of evidence' using this verb. It's less likely to be used in casual conversation among friends about misplacing a pen, where なくす would be more common.
One common mistake is using 紛失する for everyday, minor losses where なくす (nakusu) would be more natural and appropriate. For example, saying "ペンを紛失しました" (Pen o funshitsu shimashita) - 'I lost my pen' - sounds overly formal and can be a bit dramatic for such a small item. Unless the pen was particularly valuable or important for a specific task, なくす is the preferred verb.
Another error is confusing 紛失する with words related to theft or being stolen. While the outcome is similar (the item is gone), 紛失する implies an unintentional loss, whereas words like 盗まれる (nusumareru - to be stolen) clearly indicate an external agent. Using 紛失する when something was actually stolen can obscure the nature of the event and might be misleading in official reports.
Learners might also overuse the てしまう (te shimau) form. While 紛失してしまいました (funshitsu shite shimaimashita) is perfectly natural to express regret, simply saying 紛失しました (funshitsu shimashita) is also correct and often sufficient, especially in more formal reporting where excessive emotional expression might be avoided. Overusing the regretful form can sometimes sound a bit too casual or overly dramatic in a very formal context.
Incorrectly applying the particle を (o) is another potential pitfall. While it marks the direct object, learners might mistakenly use other particles or omit it entirely. Always remember that the item that is lost is the direct object, hence the use of を. For example, it's "鍵を紛失しました" (Kagi o funshitsu shimashita), not "鍵が紛失しました" (Kagi ga funshitsu shimashita) or "鍵に紛失しました" (Kagi ni funshitsu shimashita).
Finally, some learners might use 紛失する for abstract concepts. While it's possible to 'lose' one's temper or 'lose' a battle, 紛失する is strictly for tangible objects. For abstract losses, different verbs like 怒る (okoru - to get angry) or 負ける (makeru - to lose a game/battle) are used. Confusing these can lead to nonsensical sentences.
The most common alternative to 紛失する is なくす (nakusu). While both mean 'to lose,' なくす is more general and can be used in a wider range of situations. It can refer to losing something temporarily, losing something important, or even losing one's way. 紛失する, on the other hand, is more formal and specifically implies a definitive loss of a tangible object, often something valuable or necessary. For example, if you leave your keys at home and realize it later, you might say "鍵をなくした" (Kagi o nakushita), but if you've lost them somewhere outside and can't find them, and need to report it, "鍵を紛失しました" (Kagi o funshitsu shimashita) might be more appropriate, especially if you're talking to a building manager or police.
Another related concept is 落とす (otosu), which means 'to drop.' While dropping something can lead to losing it, 落とす focuses on the action of letting it fall. If you drop your phone and it rolls away, you might say "携帯を落としてしまった" (Keitai o otoshite shimatta) - 'I dropped my phone.' If you can't find it after dropping it, then it has become lost, and you might then use 紛失する or なくす to describe the state of being lost. However, if you simply dropped it and picked it up, you wouldn't use 紛失する.
For abstract losses, different verbs are used. If you lose a game or match, you use 負ける (makeru). If you lose hope, you might use 希望を失う (kibō o ushinau - 'to lose hope'), where 失う (ushinau) is another verb for 'to lose' but is used for more abstract or significant losses. If you lose your life, you use 亡くなる (nakunaru - to pass away) or 死ぬ (shinu - to die). 紛失する is strictly for tangible items.
In situations of theft, you would use 盗む (nusumu - to steal) or its passive form 盗まれる (nusumareru - to be stolen). If someone's bag is stolen, you would say 「バッグを盗まれた」 (Baggu o nusumareta), not 「バッグを紛失した」. The distinction is crucial for accurate communication.
Here's a comparison table:

How Formal Is It?

Fun Fact

The kanji 紛 (fun) itself is composed of two parts: the radical for 'silk' (糸) and the phonetic component 芬 (fun), which means 'fragrant' or 'to spread.' The connection to 'confusion' might stem from the way silk threads can become tangled and disordered. The kanji 失 (shitsu) is simpler, depicting a person falling or stumbling, symbolizing a mistake or loss.

Pronunciation Guide

UK /fʊnʃitsu suru/
US /fʊnʃitsu suru/
Stress typically falls on the first syllable of 紛 (fun), and then on the first syllable of 失 (shitsu) within the compound verb. The syllables are generally pronounced with even emphasis, but the 'shi' in 'shitsu' and the 'su' in 'suru' are often slightly more pronounced.
Rhymes With
koshitsu jisshi ronshitsu enshutsu bōshitsu yōshitsu meishitsu shōmetsu
Common Errors
  • Pronouncing 'fu' with too much lip rounding, making it sound like 'fuu'.
  • Making the 'i' in 'shitsu' too long, sounding like 'shee-tsu'.
  • Pronouncing 'su' as a hard 's' sound rather than a softer 's' sound, especially at the end of words.
  • Adding unnecessary stress to the 'ru' at the end of 'suru'.

Difficulty Rating

Reading 3/5

CEFR B1 level. Understanding 紛失する requires grasping its formal tone and specific usage context, distinguishing it from more common words like なくす. Recognizing it in official notices, news reports, or formal apologies is key.

Writing 3/5

CEFR B1 level. Using 紛失する correctly in writing involves choosing the appropriate register and grammatical structures, such as the negative warning or conditional forms, and understanding when it's more suitable than なくす.

Speaking 3/5

CEFR B1 level. Using 紛失する in speech, especially in formal situations like reporting a lost item, requires confidence in pronunciation and grammatical accuracy. It might be less common in casual conversations.

Listening 3/5

CEFR B1 level. Recognizing 紛失する in spoken Japanese, particularly in public announcements or formal interactions, is important for comprehension. Its distinct pronunciation and formal context help differentiate it.

What to Learn Next

Prerequisites

なくす (nakusu) - to lose (general) 落とす (otosu) - to drop 見つける (mitsukeru) - to find 物 (mono) - thing 場所 (basho) - place 名前 (namae) - name 連絡する (renraku suru) - to contact

Learn Next

遺失物 (ishitsu-butsu) - lost property 紛失届 (funshitsu-todoke) - lost item report 盗む (nusumu) - to steal 失う (ushinau) - to lose (abstract/formal) 管理する (kanri suru) - to manage/control

Advanced

管理不行き届き (kanri fuyuki todoki) - lack of proper management 再発防止策 (saihatsu bōshi saku) - recurrence prevention measures 責任の所在 (sekinin no shozai) - whereabouts of responsibility 情報漏洩 (jōhō rōei) - information leakage

Grammar to Know

Using the てしまう (te shimau) auxiliary verb to express regret or completion.

鍵を紛失してしまいました。 (Kagi o funshitsu shite shimaimashita.) I ended up losing my keys. (Implies regret)

Using the negative potential form 〜ないように (nai yō ni) for warnings or requests.

貴重品を紛失しないように、気をつけてください。 (Kichōhin o funshitsu shinai yō ni, ki o tsukete kudasai.) Please be careful not to lose your valuables.

Using the conditional form 〜たら (tara) to express 'if' or 'when' a loss occurs.

もしパスポートを紛失したら、すぐに大使館に連絡してください。 (Moshi pasupōto o funshitsu shitara, sugu ni taishikan ni renraku shite kudasai.) If you lose your passport, please contact the embassy immediately.

Using nouns derived from the verb, such as 紛失物 (funshitsu-butsu - lost item) and 紛失届 (funshitsu-todoke - lost item report).

紛失物を届け出ました。 (Funshitsu-butsu o todokede mashita.) I reported the lost item.

Using the past tense plain form (紛失した) as an adjective modifying a noun.

紛失したカードが見つかりました。 (Funshitsu shita kādo ga mitsukarimashita.) The lost card was found.

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Examples by Level

1

かばんをなくしました。

I lost my bag.

Uses なくしました (nakushimashita) for general loss.

2

めがねがない！

My glasses are gone!

Simple exclamation indicating something is missing.

3

これは私のペンです。

This is my pen.

Basic identification of an object.

4

どこですか？

Where is it?

Basic question about location.

5

すみません、これを拾いました。

Excuse me, I found this.

Expressing finding something.

6

私の傘はどこですか？

Where is my umbrella?

Asking about the location of a personal item.

7

これは私の鍵です。

These are my keys.

Identifying personal belongings.

8

財布がない。

My wallet is gone.

Simple statement of a missing item.

1

昨日、駅で財布をなくしてしまいました。

Yesterday, I lost my wallet at the station.

Uses なくしてしまいました (nakushite shimaimashita) to express regret for losing something.

2

パスポートが見つかりません。

I can't find my passport.

Expresses inability to find an item.

3

もし携帯電話をなくしたら、すぐに連絡してください。

If you lose your mobile phone, please contact me immediately.

Conditional sentence using the plain form of なくす.

4

大切な書類をなくさないように注意してください。

Please be careful not to lose important documents.

Negative command using ～ないように (nai yō ni).

5

落とした傘を探しています。

I am looking for the umbrella I dropped.

Uses 落とした (otoshita - dropped) to describe the item.

6

このバッグは私のものです。

This bag is mine.

Possessive statement.

7

鍵をどこかに置いたのを忘れてしまった。

I forgot where I put my keys.

Expressing forgetfulness about placing an item.

8

お土産をなくさないように気をつけます。

I will be careful not to lose my souvenirs.

Expressing intention to be careful.

1

大変申し訳ございませんが、先週、会議の資料を紛失してしまいました。

I am very sorry, but last week I lost the meeting documents.

Uses 紛失してしまいました (funshitsu shite shimaimashita) for a formal apology about losing documents.

2

パスポートを紛失した場合は、直ちに警察に届け出てください。

In case you lose your passport, please report it to the police immediately.

Uses the plain form 紛失した (funshitsu shita) in a conditional clause, common in official instructions.

3

貴重品は紛失しないよう、厳重に管理してください。

Please manage your valuables strictly so as not to lose them.

Uses the negative imperative form with ～ないよう (nai yō) for strict instruction.

4

駅で落とした財布が見つかったという連絡がありました。

I received a notification that the wallet I dropped at the station was found.

Combines 落とした (otoshita - dropped) with the idea of it being found.

5

紛失届を提出しましたが、まだ見つかっていません。

I submitted a lost item report, but it hasn't been found yet.

Uses the noun 紛失届 (funshitsu todoke - lost item report).

6

旅行中にカメラを紛失したため、写真が撮れなくなりました。

Because I lost my camera during the trip, I couldn't take pictures anymore.

Uses the past tense 紛失した (funshitsu shita) to explain a consequence.

7

この度は、弊社側の不注意によりお客様の荷物を紛失しましたことを深くお詫び申し上げます。

We deeply apologize for losing your luggage due to our company's carelessness.

Formal apology using 紛失しました (funshitsu shimashita) and 弊社側の不注意 (heisha-gawa no fuchūi - our company's carelessness).

8

犬が迷子になったようで、探しています。

It seems our dog has gone missing, and we are searching for it.

Uses 迷子になった (maigo ni natta - became lost/missing) for pets.

1

貴重品を紛失した際には、速やかに最寄りの警察署へ届け出てください。

When you lose valuables, please report them to the nearest police station promptly.

Formal instruction using 紛失した際には (funshitsu shita sai ni wa - at the time of losing).

2

紛失した定期券の再発行には、身分証明書が必要です。

An identification document is required for the reissuance of a lost commuter pass.

Uses 紛失した (funshitsu shita) as an adjective modifying 定期券 (teikiken - commuter pass).

3

長年連れ添ったペットが突然姿を消し、紛失したのではないかと心配している。

My pet, with whom I've been for many years, suddenly disappeared, and I'm worried that it might be lost.

Uses 紛失したのではないか (funshitsu shita no de wa nai ka - wondering if it is lost) to express concern.

4

業務上のミスにより、顧客の個人情報を紛失した可能性が浮上した。

The possibility of losing customer personal information due to an operational error has emerged.

Formal phrasing using 紛失した可能性 (funshitsu shita kanōsei - possibility of having lost).

5

遺失物（紛失物）の保管期間は、原則として発見から三ヶ月です。

The storage period for lost items (misplaced items) is, in principle, three months from discovery.

Uses 紛失物 (funshitsu-butsu - lost item) as a noun.

6

失くしたと思っていた財布が、まさかこんなところから出てくるとは思わなかった。

I never thought the wallet I thought I had lost would turn up in a place like this.

Uses 失くしたと思っていた (nakushita to omotte ita - thought I had lost) to show surprise.

7

空港で手荷物を紛失した場合の対応について、事前に確認しておくと安心です。

It's reassuring to confirm in advance the procedures for losing your checked baggage at the airport.

Uses 手荷物を紛失した場合 (tenimotsu o funshitsu shita baai - in the case of losing checked baggage).

8

大切にしていた宝飾品が紛失したショックから、しばらく立ち直れなかった。

I couldn't recover from the shock of losing the jewelry I cherished for a while.

Uses 紛失したショック (funshitsu shita shokku - the shock of losing) to describe emotional impact.

1

公的機関への紛失届の提出は、迅速な対応を可能にするための第一歩です。

Submitting a lost item report to public institutions is the first step towards enabling a prompt response.

Uses 紛失届の提出 (funshitsu todoke no teishutsu - submission of a lost item report) in a formal context.

2

管理体制の不備により、機密情報が紛失したという事態は、企業の信用を著しく損なう。

The situation where confidential information was lost due to flaws in the management system significantly damages a company's credibility.

Uses 紛失したという事態 (funshitsu shita to iu jitai - the situation where it was lost) for a serious report.

3

長期間にわたり行方不明であった遺失物が、予期せぬ形で発見されるケースは少なくない。

It is not uncommon for lost items, which were missing for a long period, to be discovered in unexpected ways.

Uses 遺失物 (ishitsu-butsu - lost item) and relates it to being missing for a long time.

4

個人的な過失による紛失は、自己責任の原則に基づき、原則として補償の対象外となります。

Losses due to personal negligence are, as a general rule, not eligible for compensation based on the principle of self-responsibility.

Uses 個人的な過失による紛失 (kojinteki na kashitsu ni yoru funshitsu - loss due to personal negligence) in a legalistic context.

5

貴重品の紛失を防ぐため、旅行中は常に身の回りの品々を意識的に確認する習慣をつけた。

To prevent the loss of valuables, I developed a habit of consciously checking my belongings at all times while traveling.

Uses 紛失を防ぐため (funshitsu o fusegu tame - in order to prevent loss).

6

歴史的建造物から盗難されたとされる美術品が、紛失状態のまま長年行方をくらましていた。

Artworks reported stolen from a historical building had remained in a lost state for many years.

Uses 紛失状態 (funshitsu jōtai - state of being lost).

7

捜索しても見つからず、紛失したものと諦めかけていた矢先に、意外な場所から現れた。

Just as I was about to give up, thinking it was lost, it appeared from an unexpected place, despite my searching.

Uses 紛失したものと諦めかけていた (funshitsu shita mono to akiramekakete ita - was about to give up thinking it was lost).

8

近年、サイバー空間における情報紛失のリスクが増大しており、対策が急務となっている。

In recent years, the risk of information loss in cyberspace has been increasing, making countermeasures a pressing need.

Uses 情報紛失 (jōhō funshitsu - information loss) in a modern context.

1

遺失物法に基づき、拾得物（紛失物）の権利帰属に関する規定が定められている。

Based on the Lost Property Act, provisions concerning the ownership rights of found property (lost property) are established.

Uses 遺失物法 (ishitsu-butsu hō - Lost Property Act) and 紛失物 (funshitsu-butsu - lost property) in a legal context.

2

組織的な管理不行き届きに起因する機密情報の紛失は、国家安全保障上の脅威ともなり得る。

The loss of confidential information stemming from systemic mismanagement can also pose a threat to national security.

Uses 機密情報の紛失 (kimitsu jōhō no funshitsu - loss of confidential information) with serious implications.

3

文化財の散逸・紛失を防ぐための国際的な協力体制の構築が喫緊の課題である。

The establishment of an international cooperation system to prevent the dissipation and loss of cultural assets is an urgent issue.

Uses 散逸・紛失 (sansotsu・funshitsu - dissipation and loss) for cultural heritage.

4

個人の記録媒体の紛失が、思わぬ形で広範な情報漏洩につながるケースが後を絶たない。

Cases where the loss of personal recording media leads to widespread information leakage in unexpected ways continue to occur.

Uses 個人の記録媒体の紛失 (kojin no kiroku baitai no funshitsu - loss of personal recording media).

5

紛失した証券の再発行手続きは煩雑であり、厳格な本人確認が求められる。

The procedure for reissuing lost securities is complex and requires strict identity verification.

Uses 紛失した証券 (funshitsu shita shōken - lost securities).

6

過去の紛失事例を分析し、再発防止策を講じることが、組織の信頼回復には不可欠である。

Analyzing past cases of loss and implementing preventive measures is essential for restoring an organization's trust.

Uses 紛失事例 (funshitsu jirei - cases of loss).

7

予期せぬ事態による所有物の紛失は、精神的な動揺のみならず、経済的な損失をもたらす。

The loss of possessions due to unforeseen circumstances brings not only emotional distress but also economic losses.

Uses 予期せぬ事態による所有物の紛失 (yoki senu jitai ni yoru shoyū-butsu no funshitsu - loss of possessions due to unforeseen circumstances).

8

現代社会における情報管理の甘さが、個人情報紛失の温床となっていることは否定できない。

It cannot be denied that lax information management in modern society is a breeding ground for personal information loss.

Uses 個人情報紛失 (kojin jōhō funshitsu - personal information loss) and 温床 (onshō - breeding ground).

Common Collocations

紛失届を提出する
紛失しないように注意する
紛失した可能性があります
紛失の原因
紛失物係
紛失を免れる
紛失した書類
紛失の恐れ
紛失した機材
紛失の責任

Common Phrases

紛失しました

— I lost it. (Formal/Definitive)

すみません、財布を紛失しました。 (Sumimasen, saifu o funshitsu shimashita.) Excuse me, I lost my wallet.

紛失してしまいました

— I ended up losing it. (With regret)

大切な指輪を紛失してしまいました。 (Taisetsu na yubiwa o funshitsu shite shimaimashita.) I ended up losing my precious ring.

紛失届

— Lost item report.

駅で紛失届を出しました。 (Eki de funshitsu todoke o dashimashita.) I filed a lost item report at the station.

紛失物

— Lost item(s).

紛失物をお探しですか？ (Funshitsu-butsu o osagashi desu ka?) Are you looking for lost items?

紛失しないように

— So as not to lose (it).

パスポートを紛失しないように、いつも肌身離さず持っています。 (Pasupōto o funshitsu shinai yō ni, itsumo hadami hanasazu motte imasu.) So as not to lose my passport, I always keep it close to me.

紛失の恐れがあります

— There is a fear of loss.

この書類は紛失の恐れがありますので、厳重に保管してください。 (Kono shorui wa funshitsu no osore ga arimasu node, genjū ni hokan shite kudasai.) There is a fear of loss for this document, so please store it securely.

紛失した可能性

— Possibility of having lost.

荷物が紛失した可能性について、航空会社に問い合わせました。 (Nimotsu ga funshitsu shita kanōsei ni tsuite, kōkūgaisha ni toiawasemashita.) I inquired with the airline about the possibility of my luggage being lost.

紛失の原因究明

— Investigation into the cause of loss.

紛失の原因究明が急務となっています。 (Funshitsu no gen'in kyūmei ga kyūmu to natte imasu.) Investigating the cause of the loss has become an urgent task.

紛失物取扱所

— Lost and found office.

紛失物は紛失物取扱所に届けられます。 (Funshitsu-butsu wa funshitsu-butsu toriatsukaijo ni todokeraremasu.) Lost items are delivered to the lost and found office.

紛失の責任を問う

— To hold someone responsible for a loss.

紛失の責任を問われた。 (Funshitsu no sekinin o towareta.) I was held responsible for the loss.

Often Confused With

紛失する vs なくす (nakusu)

While both mean 'to lose,' なくす is more general and can be used in a wider range of situations, including temporary misplacement. 紛失する is more formal and implies a definitive or serious loss, often of a valuable item.

紛失する vs 落とす (otosu)

This means 'to drop.' Losing something (紛失する) can be a consequence of dropping it (落とす), but 落とす focuses on the action of letting it fall, whereas 紛失する focuses on the state of it being gone.

紛失する vs 盗まれる (nusumareru)

This means 'to be stolen.' 紛失する implies an unintentional loss, whereas 盗まれる indicates that someone deliberately took the item.

Easily Confused

紛失する vs なくす

Both verbs mean 'to lose'.

紛失する is more formal and implies a definitive loss of a tangible item, often used in official contexts. なくす is more general, can be used for abstract things, and is common in everyday speech for both temporary and permanent losses.

財布をなくしました。(Saifu o nakushimashita.) - I lost my wallet. (General, could be anywhere) 財布を紛失しました。(Saifu o funshitsu shimashita.) - I lost my wallet. (More formal, perhaps reporting it to the police).

紛失する vs 失う

Both verbs mean 'to lose', but have different nuances.

紛失する is primarily for tangible objects and formal situations. 失う is often used for abstract things (like trust, hope, consciousness) or significant, profound losses, and carries a deeper emotional weight.

希望を失った。(Kibō o ushinatta.) - I lost hope. (Not 紛失する) 指輪を紛失した。(Yubiwa o funshitsu shita.) - I lost my ring. (Tangible object, formal context)

紛失する vs 落とす

Dropping something can lead to losing it.

落とす specifically refers to the action of letting something fall. 紛失する refers to the state of being lost after the action. You drop something (落とす), and then you realize it's gone (紛失する).

階段で携帯を落としてしまった。 (Kaidan de keitai o otoshite shimatta.) I dropped my phone on the stairs. その後、携帯が見つからなかったので紛失したと判断しました。 (Sono go, keitai ga mitsukaranakatta node funshitsu shita to handan shimashita.) After that, since I couldn't find my phone, I determined it was lost.

紛失する vs 盗まれる

The outcome is the same: the item is gone.

紛失する implies an unintentional loss where the item disappeared on its own or due to negligence. 盗まれる specifically means 'to be stolen,' indicating an act of theft by another person.

自転車が盗まれた。(Jitensha ga nusumareta.) - My bicycle was stolen. 自転車を紛失した。(Jitensha o funshitsu shita.) - I lost my bicycle. (Implies it might have been parked and forgotten, or fell into a river, etc., rather than stolen).

紛失する vs 見失う

Both involve losing track of something.

見失う means 'to lose sight of' or 'lose track of,' often used for things in motion (people, vehicles) or abstract concepts (goals). 紛失する is about losing possession of a static item.

子供を見失ってしまった。 (Kodomo o miushinatte shimatta.) I lost sight of my child. バッグを紛失した。 (Baggu o funshitsu shita.) I lost my bag.

Sentence Patterns

B1

Noun (item) + を + 紛失しました。

携帯電話を紛失しました。 (Keitai denwa o funshitsu shimashita.) I lost my mobile phone.

B1

Noun (item) + を + 紛失してしまいました。

大切な書類を紛失してしまいました。 (Taisetsu na shorui o funshitsu shite shimaimashita.) I ended up losing my important documents.

B1

Noun (item) + を + 紛失しないように + Verb.

パスポートを紛失しないように、気をつけてください。 (Pasupōto o funshitsu shinai yō ni, ki o tsukete kudasai.) Please be careful not to lose your passport.

B1

もし + Noun (item) + を + 紛失したら、 + Sentence.

もし鍵を紛失したら、大家さんに連絡してください。 (Moshi kagi o funshitsu shitara, ooyasan ni renraku shite kudasai.) If you lose your keys, please contact the landlord.

B1

紛失届 + を + 出す/提出する。

財布の紛失届を出しました。 (Saifu no funshitsu todoke o dashimashita.) I filed a lost wallet report.

B2

Noun (item) + は + 紛失の恐れがあるため、 + Caution.

この貴重品は紛失の恐れがあるため、厳重に保管してください。 (Kono kichōhin wa funshitsu no osore ga aru tame, genjū ni hokan shite kudasai.) This valuable item is at risk of being lost, so please store it securely.

B2

Noun (item) + の + 紛失 + について + Sentence.

会社からの書類の紛失について、調査が行われています。 (Kaisha kara no shorui no funshitsu ni tsuite, chōsa ga okonawarete imasu.) An investigation is underway regarding the loss of documents from the company.

B2

Noun (event) + により + 紛失 + した。

不注意により、重要なデータを紛失した。 (Fuchūi ni yori, jūyō na dēta o funshitsu shita.) I lost important data due to carelessness.

Word Family

Nouns

紛失 (funshitsu) - loss
紛失物 (funshitsu-butsu) - lost item
紛失届 (funshitsu-todoke) - lost item report

Verbs

紛失する (funshitsu suru) - to lose

Related

失う (ushinau) - to lose (abstract, formal)
なくす (nakusu) - to lose (general)
落とす (otosu) - to drop
盗まれる (nusumareru) - to be stolen
見つける (mitsukeru) - to find
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How to Use It

frequency

Medium-high in formal contexts, low in casual conversation.

Common Mistakes
  • Using 紛失する for minor, everyday losses. → Using なくす for minor losses.

    紛失する is formal and implies a significant loss. For example, losing a pen is typically なくした, not 紛失した.

  • Confusing 紛失する with 盗まれる (to be stolen). → Using 紛失する for unintentional loss and 盗まれる for theft.

    紛失する implies the item disappeared on its own or due to negligence. 盗まれる means it was actively stolen by someone.

  • Using 紛失する for abstract concepts. → Using verbs like 失う (ushinau) for abstract losses.

    紛失する is strictly for tangible objects. You cannot 紛失する hope or trust; you 失う them.

  • Incorrect particle usage (e.g., using が instead of を). → Object + を + 紛失する.

    The item that is lost is the direct object, so it is marked with the particle を (o). For example, 「鍵を紛失しました」 (Kagi o funshitsu shimashita).

  • Overusing the てしまいました (te shimaimashita) form. → Using 紛失しました (funshitsu shimashita) for factual reporting and 紛失してしまいました (funshitsu shite shimaimashita) for expressing regret.

    While regretful, the てしまいました form isn't always necessary or appropriate in very formal, neutral reports. Simply stating 紛失しました is often sufficient.

Tips

Formality Matters

Remember that 紛失する is a formal verb. While you might hear it in public announcements, it's less common in casual chats among friends. For everyday losses, なくす is usually preferred. Using 紛失する in the wrong context can sound overly dramatic or stiff.

Connect to Officialdom

Associate 紛失する with official situations like filing reports (紛失届), police stations, or formal apologies. This helps distinguish its formal register from the more general なくす.

Regretful Loss

To express regret when something has been lost, add the auxiliary verb てしまう (te shimau) to form 紛失してしまいました (funshitsu shite shimaimashita). This adds a layer of emotional nuance, indicating that the loss was unfortunate and perhaps unavoidable.

Tangible Objects Only

Always use 紛失する for physical items. It is not appropriate for abstract concepts like losing hope, losing a game, or losing one's temper. For those situations, different verbs are required.

Clear 'Shi' Sound

Pay attention to the 'shitsu' sound in 紛失する. It's a distinct syllable that, along with the kanji, helps identify the word. Practice saying it clearly, especially when trying to use it in formal speech.

Loss vs. Theft

Crucially, 紛失する means 'to lose' unintentionally. If an item was stolen, the correct verb is 盗まれる (nusumareru). Confusing these can lead to misunderstandings, especially in official reports.

Noun Forms

Remember related nouns like 紛失物 (funshitsu-butsu - lost item) and 紛失届 (funshitsu-todoke - lost item report). Knowing these will help you understand signs and forms related to lost property.

Role-Playing Scenarios

Practice role-playing scenarios where you need to report a lost item. Imagine losing your passport or wallet and explain what happened using 紛失する and related phrases. This will solidify your understanding and usage.

Negative Instructions

When giving warnings or instructions to prevent loss, use the pattern 「〜を紛失しないように」 (〜 o funshitsu shinai yō ni). For example, "この書類を紛失しないように、大切に保管してください" (This document should be kept carefully so as not to lose it).

Kanji Clues

The kanji 紛 (confusion/disorder) and 失 (loss/fault) hint at the meaning: a loss that occurs in a confused or disordered state, making recovery difficult. This imagery can aid memorization.

Memorize It

Mnemonic

Imagine you've lost your favorite 'fun' (fun) toy in a 'shitsu' (shitsu) of messy room. You're in a state of confusion and disorder (紛) and have experienced a loss (失). So, you've 'funshitsu'ed your toy!

Visual Association

Picture a tangled ball of silk thread (representing 紛 - confusion) next to an empty box (representing 失 - loss). The silk is so tangled, you can't find what was inside the box.

Word Web

Loss Misplace Forget Item Valuable Report Formal Official Irreversible Regrettable Documents Passport Keys Wallet Found Stolen Dropped Tìm thấy (Vietnamese for 'found') Perdu (French for 'lost') Verloren (German for 'lost')

Challenge

Try to describe a scenario where you lost something important. Use the verb 紛失する and related phrases like 紛失届. Imagine you are writing an official email or making a formal announcement about the lost item.

Word Origin

The word 紛失する is a compound word formed from two kanji. 紛 (fun) means 'confusion,' 'disorder,' or 'turmoil,' and 失 (shitsu) means 'loss,' 'fault,' or 'error.' The combination suggests a loss that has occurred amidst confusion or disorder, making it difficult to recover or pinpoint.

Original meaning: The literal meaning can be interpreted as 'a loss occurring in confusion' or 'a disordered loss.' This implies that the item is not just gone, but its disappearance might be due to circumstances that are chaotic or unclear, making the search and recovery process more challenging.

Sino-Japanese (derived from Chinese characters)

Cultural Context

When discussing the loss of personal items, especially in formal settings, it's important to be respectful. The verb 紛失する itself is neutral, but the context of a loss can be sensitive for the person experiencing it. Acknowledging the inconvenience and potential distress is part of polite communication.

In English-speaking countries, while 'to lose' is common, specific terms like 'report a loss' or 'lost property' are used in formal contexts. The Japanese 紛失する combines the act of losing with a formal tone that might be conveyed in English through phrases like 'misplaced' (if less severe) or 'suffered a loss of' (if more formal/severe).

The concept of 'Mottainai' (もったいない - 'what a waste') can sometimes be related to the feeling of loss, though it's more about appreciating and not wasting resources. Stories involving lost treasures or artifacts often use formal language that would align with 紛失する. In anime and manga, characters often lose important items, and the dialogue might reflect the formality of 紛失する in serious situations.

Practice in Real Life

Real-World Contexts

Reporting a lost item at a police station or lost and found office.

  • 紛失しました (funshitsu shimashita)
  • 紛失届を出したいのですが (funshitsu todoke o dashitai no desu ga)
  • どのようなものを紛失されましたか？ (Dono yō na mono o funshitsu saremashita ka?)
  • 紛失した場所はどこですか？ (Funshitsu shita basho wa doko desu ka?)

Public announcements in stations or airports regarding lost property.

  • 落とし物はありませんか？ (Otoshimono wa arimasen ka?)
  • 紛失された方は、〇〇までお越しください。(Funshitsu sareta kata wa, marumaru made okoshi kudasai.)
  • 〇〇線にて傘を紛失されたとのことです。(Marumaru sen nite kasa o funshitsu sareta to no koto desu.)

Formal apologies from businesses for lost items or data.

  • 紛失したことを深くお詫び申し上げます。(Funshitsu shita koto o fukaku owabi mōshiagemasu.)
  • 弊社の不注意により紛失いたしました。(Heisha no fuchūi ni yori funshitsu itashimashita.)
  • 紛失した可能性がございます。(Funshitsu shita kanōsei ga gozaimasu.)

Instructions or warnings about handling important items.

  • 紛失しないように注意してください。(Funshitsu shinai yō ni chūi shite kudasai.)
  • 紛失の恐れがありますので、厳重に管理してください。(Funshitsu no osore ga arimasu node, genjū ni kanri shite kudasai.)
  • 紛失しないための対策を講じてください。(Funshitsu shinai tame no taisaku o kōjite kudasai.)

Discussing lost documents or equipment in a professional setting.

  • 紛失した書類が見つかりません。(Funshitsu shita shorui ga mitsukarimasen.)
  • 紛失の原因を調査しています。(Funshitsu no gen'in o chōsa shite imasu.)
  • 機材を紛失したため、業務が遅延しています。(Kizai o funshitsu shita tame, gyōmu ga chien shite imasu.)

Conversation Starters

"Have you ever lost something really important? What was it?"

"If you lost your passport while traveling, what would be the first thing you'd do?"

"What's the most valuable item you own, and how do you make sure you don't lose it?"

"Imagine you found a wallet on the street. What steps would you take?"

"What are some common items people lose in public places in your country?"

Journal Prompts

Describe a time you lost something and the feelings associated with it. How did you resolve the situation?

Write a formal report (as if to a company or authority) about losing an important document. Use the word 紛失する.

Reflect on the importance of personal responsibility when it comes to keeping track of belongings. How does the concept of 'loss' tie into this?

Imagine you are creating a public announcement for a train station about lost items. Write the announcement, using appropriate language.

Compare and contrast the Japanese word 紛失する with the English word 'to lose' and discuss the nuances in their usage.

Frequently Asked Questions

10 questions

The primary difference lies in formality and nuance. 紛失する is more formal and implies a definitive, often regrettable loss of a tangible item, commonly used in official reports or serious situations. なくす is a general verb for 'to lose,' usable in a wider range of contexts, both formal and informal, and can refer to temporary misplacements or even abstract losses. For instance, losing your keys at home might be なくした, but losing your passport while traveling and reporting it would be 紛失した.

Use 紛失する when the situation is formal, the item lost is significant (like a passport, important document, or valuable possession), or when you are reporting the loss to authorities, a company, or in a business context. It conveys a greater sense of seriousness and finality.

No, 紛失する is almost exclusively used for tangible, physical objects. For abstract losses like hope, trust, or consciousness, you would use verbs like 失う (ushinau) or other specific expressions. For example, you would say 「信頼を失った」 (shinrai o ushinatta - lost trust), not 「信頼を紛失した」.

A 紛失届 is a 'lost item report.' It's an official document that you fill out when you lose something important, such as a passport, ID card, or valuable item, and submit to the police or a relevant institution. It helps in the process of reporting the loss and potentially recovering the item.

Generally, no. 紛失する implies an unintentional loss, where the item has disappeared. If an item was taken by someone else, the verb 盗まれる (nusumareru - to be stolen) is used. While the outcome is similar (the item is gone), the cause is different. Using 紛失する for a theft would be inaccurate.

You can add the auxiliary verb てしまう (te shimau) to the verb. The past tense form becomes 紛失してしまいました (funshitsu shite shimaimashita), which translates to 'I ended up losing it' or 'I've lost it (unfortunately).' This form conveys a stronger sense of regret or helplessness.

Common items include passports, identification cards, wallets, keys, mobile phones, important documents, valuable jewelry, and sometimes even pets or valuable equipment.

It's not very common in casual, everyday conversation among friends unless the item is very important and the situation is serious. For minor losses like misplacing a pen or a book, なくす (nakusu) is much more frequently used.

The noun form is 紛失 (funshitsu), meaning 'loss.' You might see it in compound words like 紛失物 (funshitsu-butsu - lost item) or 紛失届 (funshitsu-todoke - lost item report).

You can use phrases like 紛失を防ぐ (funshitsu o fusegu - to prevent loss) or 紛失しないように (funshitsu shinai yō ni - so as not to lose). For example, "貴重品を紛失しないように注意してください" (Kichōhin o funshitsu shinai yō ni chūi shite kudasai - Please be careful not to lose your valuables).

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