失踪|しっそうshissou[0]heiban (flat)
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- noun, suru verb, intransitive verbdisappearance; running away; going missing; absconding
Conjugation
| Dictionary form | 失踪する(しっそうする) |
|---|---|
| Polite (masu) | 失踪します(しっそうします) |
| Negative (nai) | 失踪しない(しっそうしない) |
| polite (masen) | 失踪しません(しっそうしません) |
| classical zu / nu | 失踪せず・失踪せぬ(しっそうせず・しっそうせぬ) |
| Past (ta) | 失踪した(しっそうした) |
| polite (mashita) | 失踪しました(しっそうしました) |
| Past negative (nakatta) | 失踪しなかった(しっそうしなかった) |
| polite (masen deshita) | 失踪しませんでした(しっそうしませんでした) |
| Te form | 失踪して(しっそうして) |
| Potential | 失踪できる(しっそうできる) |
| Passive | 失踪される(しっそうされる) |
| Causative | 失踪させる(しっそうさせる) |
| Causative passive | 失踪させられる(しっそうさせられる) |
| Conditional (ba) | 失踪すれば(しっそうすれば) |
| tara | 失踪したら(しっそうしたら) |
| Volitional | 失踪しよう(しっそうしよう) |
| polite (mashou) | 失踪しましょう(しっそうしましょう) |
| Imperative | 失踪しろ(しっそうしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym失跡しっせきWrittenWritten/formal prose synonym for 「失踪」: someone's whereabouts become unknown. In daily use and legal contexts, 「失踪」 is the standard word.
- Synonym蒸発じょうはつCasualColloquial for a person suddenly going missing or running away from home; carries the nuance of the person making themselves disappear.
- Synonym雲隠れくもがくれCasualColloquial: going into hiding, vanishing from sight, often deliberately to evade responsibility; 「失踪」 only says the whereabouts are unknown.
- Related消えるきえるNeutralNeutral: to disappear or go out (lights, feelings, etc.); the widest-ranging of these words, but not specific to a person going missing.
- RelatedなくなるNeutralNeutral: for things being lost or used up; mostly said of objects, not of people going missing.
- Related消え失せるきえうせるNeutralNeutral: to vanish without a trace; also to die. Often carries an abusive tone, as in 「消え失せろ」.
- RelatedドロンCasualSlang for dashing off or slipping away in a flash; colloquial and comical in feel.
- Related失せるうせるCasualColloquial: to disappear or leave; also a rough insult as 「失せろ」.
- Related失せ去るうせさるWrittenWritten/formal prose: to disappear, be gone. Uncommon, and not specific to a person going missing.
- Related掻き消えるかききえるNeutralNeutral: for sounds, light or shadows suddenly dissipating; stresses vanishing in an instant.
- Antonym発見はっけんNeutralAntonym: to find or discover; stands opposite to 「失踪」's unknown whereabouts.
- Antonym帰還きかんNeutralAntonym: returning from a distant place, as in 「無事に帰還する」; stands opposite to 「失踪」.
Use 「失踪」 when a person's whereabouts or fate is unknown; it is also the legal term, as in 「失踪宣告」. For deliberate hiding say 「雲隠れ」, colloquially 「蒸発」; for disappearing in general 「消える」. Antonyms: 「発見」, 「帰還」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


