突発|とっぱつtoppatsu[0]heiban (flat)

Common
Definitions
  1. noun, suru verb, intransitive verboutbreak; occurrence
    その突発とっぱつについて不必要ふひつように心配しんぱいする必要ひつようはない。↗
    There is no need to be unnecessarily anxious about the outbreak.
Conjugation
Dictionary form突発する(とっぱつする)
Polite (masu)突発します(とっぱつします)
Negative (nai)突発しない(とっぱつしない)
polite (masen)突発しません(とっぱつしません)
classical zu / nu突発せず・突発せぬ(とっぱつせず・とっぱつせぬ)
Past (ta)突発した(とっぱつした)
polite (mashita)突発しました(とっぱつしました)
Past negative (nakatta)突発しなかった(とっぱつしなかった)
polite (masen deshita)突発しませんでした(とっぱつしませんでした)
Te form突発して(とっぱつして)
Potential突発できる(とっぱつできる)
Passive突発される(とっぱつされる)
Causative突発させる(とっぱつさせる)
Causative passive突発させられる(とっぱつさせられる)
Conditional (ba)突発すれば(とっぱつすれば)
tara突発したら(とっぱつしたら)
Volitional突発しよう(とっぱつしよう)
polite (mashou)突発しましょう(とっぱつしましょう)
Imperative突発しろ(とっぱつしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym勃発ぼっぱつNeutralNeutral. For wars and major events suddenly breaking out, as in 「戦争が勃発する」; it suits large-scale happenings, while 「突発」 also covers small accidents and sudden illness.
  • Related激発げきはつWrittenWritten/formal prose. Describes emotions or events erupting violently; the stress is on intensity, and it is rarely used.

Use 「突発」 for something sudden happening, from small accidents to illness, as in 「突発事故」. Choose 「勃発」 for wars or major events breaking out, as in 「戦争が勃発する」. 「激発」 is a rare written word for violent eruptions of emotion or events.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. 物事ものごとが急きゅうに起おこること。
  2. 突然とつぜん発症はっしょうすること。
Kanji in this word
English equivalents

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