枯渇

1. Origins, structure, and basic meaning

• Structure: 枯渇(こかつ) means drying up or exhausting a supply such as water or other resources.
• Basic usage: It is used for a water source drying up or ideas ceasing to come.

2. Common pitfalls and similar expressions

• From water to ideas
  • 水源が枯渇した means that a water source dried up.
  • アイデアの枯渇 figuratively describes ideas running dry.
• Stronger than 不足
  • 不足(ふそく) means having less than is needed; 枯渇 emphasizes a supply or resource reaching exhaustion.