鋭意

1. Origins, structure, and basic meaning

• Structure: 鋭意 (えいい) is an adverb meaning diligently or earnestly, with focused effort toward one task.
• Basic usage: It formally emphasizes commitment before actions such as 準備を進める and 取り組む.
  • 新しい展示会に向けて鋭意準備を進めている。 — We are working diligently in preparation for the new exhibition.
  • 担当者は問題の解決に鋭意取り組んだ。 — The person in charge earnestly addressed the problem.

2. Common pitfalls and similar expressions

• Formal register
  • 鋭意 is more common in notices and reports than 一生懸命. It means applying concentrated effort, not simply acting quickly.