離散|りさんrisan[0]heiban (flat)
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- noun, suru verb, intransitive verbdispersion; separation; scattering; breakup
Conjugation
| Dictionary form | 離散する(りさんする) |
|---|---|
| Polite (masu) | 離散します(りさんします) |
| Negative (nai) | 離散しない(りさんしない) |
| polite (masen) | 離散しません(りさんしません) |
| classical zu / nu | 離散せず・離散せぬ(りさんせず・りさんせぬ) |
| Past (ta) | 離散した(りさんした) |
| polite (mashita) | 離散しました(りさんしました) |
| Past negative (nakatta) | 離散しなかった(りさんしなかった) |
| polite (masen deshita) | 離散しませんでした(りさんしませんでした) |
| Te form | 離散して(りさんして) |
| Potential | 離散できる(りさんできる) |
| Passive | 離散される(りさんされる) |
| Causative | 離散させる(りさんさせる) |
| Causative passive | 離散させられる(りさんさせられる) |
| Conditional (ba) | 離散すれば(りさんすれば) |
| tara | 離散したら(りさんしたら) |
| Volitional | 離散しよう(りさんしよう) |
| polite (mashou) | 離散しましょう(りさんしましょう) |
| Imperative | 離散しろ(りさんしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym離れ離れはなればなれNeutralPeople or things gone separate ways, far apart; common in colloquial speech, while 「離散」 is more written and mostly said of families or organizations scattering.
- Synonym散乱さんらんNeutralThings lying scattered in disorder; also the physical scattering of waves or particles. It applies mostly to things, while 「離散」 is mostly about people.
- Synonym別れ別れわかれわかれNeutralMeans parting and then each going separate ways; close to 「離れ離れ」 but less common.
- Related散り散りちりぢりNeutralPeople or things that were together scatter in all directions, as in 「散り散りに逃げる」; stresses the appearance of scattering every which way.
- Related乱離らんりWrittenOrdinary people displaced and scattered amid war or upheaval; highly literary, found mainly in historical texts.
- Antonym集合しゅうごうNeutralAntonym: gathering or assembling of people and things; the opposite of dispersing.
- Antonym集結しゅうけつNeutralAntonym: massing of troops or personnel in one place; the opposite of scattering in all directions.
「離散」 is fairly written: for families or organizations breaking up, as in 「一家離散」, or for discrete values. Everyday speech prefers 「離れ離れ」; use 「散り散り」 for people scattering in all directions and 「散乱」 for objects scattered in disorder. Antonyms: 「集合」, 「集結」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


