乱舞

1. Origins, structure, and basic meaning

• Structure: 乱舞, read らんぶ, describes wild dancing or a whirling, fluttering movement.
• Basic usage: Adding する makes a verb that can describe butterflies or confetti as well as people.

2. Common pitfalls and similar expressions

• Figurative movement
  • 紙吹雪が乱舞した means that pieces of confetti whirled about.
  • 蝶が花畑で乱舞している depicts butterflies flying about in a flower field as if dancing.
• Forms and scenes
  • 乱舞した places the movement in the past.
  • 乱舞している presents it as ongoing.