綿密

1. Origins, structure, and basic meaning

• Structure: The adjectival noun 綿密 (めんみつ) describes work that is thorough and meticulous down to the details.
• Basic usage: It modifies a noun in 綿密な計画 and becomes adverbial in 綿密に確認する.

2. Common pitfalls and similar expressions

• Meticulous planning and checking
  • It means attention to detail without omissions, not merely that a task takes a long time.