離散|りさんrisan[0]heiban (flat)

Common
Definitions
  1. 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.

Synonyms & antonyms
  • 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

Japanese definitions
  1. 離れ離はなればなれになること。散り散ちりじりになること。
  2. 連続的れんぞくてきでなくとびとびの値あたいを取とること。
Kanji in this word
English equivalents
See also

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