厳守

1. Origins, structure, and basic meaning

• Structure: 厳守(げんしゅ) is a noun meaning strict observance; 厳守する is its verbal form.
• Basic usage: Notices and instructions use it to emphasize keeping to a time, rule, or confidentiality requirement.

2. Common pitfalls and similar expressions

• Interpret the object
  • 集合時間を厳守する means observing the meeting time without being late. 秘密厳守 focuses on not disclosing confidential information.
• A stronger request than 守る
  • It emphasizes stricter compliance than 守る(まもる), so 厳守してください is stronger than a casual suggestion. It does not suit every everyday request at the same level of force.