突とっ発ぱつ

noun, noun or participle which takes 'suru', intransitive verb

outbreak; sudden occurrence

Refers to something breaking out or happening suddenly and unexpectedly, often with a negative connotation (e.g., disease, violence, accident). Used both as a noun and with する to mean 'to break out' or 'to occur suddenly'.

• 学がっ校こうでインフルエンザが突とっ発ぱつした。

  An influenza outbreak occurred at the school.

• 突とっ発ぱつ的てきなトラブルに対たい応おうする。

  Deal with sudden troubles.