警戒

1. Origins, structure, and basic meaning

• Structure: Written 警戒 and read けいかい, it is active vigilance and preparation in anticipation of possible danger.
• Basic usage: It is maintained around wildlife in the mountains and increased after a suspicious call.

2. Common pitfalls and similar expressions

• Prepared watchfulness, not fear alone
  • The word involves monitoring and defensive attention rather than merely feeling afraid.