自壊|じかいjikai[0]heiban (flat)
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- noun, suru verb, intransitive verbdisintegration
- noun, suru verb, intransitive verbself-destruction
Conjugation
| Dictionary form | 自壊する(じかいする) |
|---|---|
| Polite (masu) | 自壊します(じかいします) |
| Negative (nai) | 自壊しない(じかいしない) |
| polite (masen) | 自壊しません(じかいしません) |
| classical zu / nu | 自壊せず・自壊せぬ(じかいせず・じかいせぬ) |
| Past (ta) | 自壊した(じかいした) |
| polite (mashita) | 自壊しました(じかいしました) |
| Past negative (nakatta) | 自壊しなかった(じかいしなかった) |
| polite (masen deshita) | 自壊しませんでした(じかいしませんでした) |
| Te form | 自壊して(じかいして) |
| Potential | 自壊できる(じかいできる) |
| Passive | 自壊される(じかいされる) |
| Causative | 自壊させる(じかいさせる) |
| Causative passive | 自壊させられる(じかいさせられる) |
| Conditional (ba) | 自壊すれば(じかいすれば) |
| tara | 自壊したら(じかいしたら) |
| Volitional | 自壊しよう(じかいしよう) |
| polite (mashou) | 自壊しましょう(じかいしましょう) |
| Imperative | 自壊しろ(じかいしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym崩れるくずれるNeutralA verb covering collapse, crumbling and losing shape, whatever the cause; 「自壊」 stresses breaking apart on its own, from within, with no outside force.
- Synonym壊れるこわれるNeutralThe most everyday verb for things breaking or breaking down; unlike 「自壊」, it says nothing about whether the cause comes from within.
- Related潰れるつぶれるNeutralTo be crushed or squashed, and of companies to go under, often through outside pressure or poor management; 「自壊」 specifically stresses collapse with no outside force.
- Related破壊はかいNeutralDestruction wrought mainly by an external force — the opposite direction from 「自壊」, which collapses on its own without outside action.
- Related崩落ほうらくWrittenWritten/formal prose for mountains, buildings and the like caving in and falling; it stresses physical collapse, and also refers to a sudden market plunge.
For things simply breaking or malfunctioning, use 「壊れる」. Use 「自壊」 when you want to stress an organization or system falling apart on its own through internal contradictions. For destruction by an outside force, use 「破壊」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


