勃発

1. Origins, structure, and basic meaning

• Structure: 勃発 (ぼっぱつ) combines sudden rising 勃 and outbreak 発 to denote an abrupt outbreak.
• Basic usage: It applies to war caused by a border dispute or a heated argument sparked by a misunderstanding.

2. Common pitfalls and similar expressions

• Sudden outbreak of conflict
  • 勃発する commonly marks an undesirable conflict beginning abruptly, not the scheduled opening of a neutral event.