威勢

1. Origins, structure, and basic meaning

• Structure: 威勢 is read as いせい and means “vigor” and “swagger”.
• Basic usage: It denotes a vendor’s vigorous voice and swagger fading after repeated failures.

2. Common pitfalls and similar expressions

• 威勢のよい声 / 登場したときの威勢
  • 威勢のよい声 conveys lively vigor, while 登場したときの威勢 can suggest swagger.