- 乾燥 — dryness; aridity; dehydration
- 高燥 — high and dry place
- 焦燥 — impatience; restlessness
燥 pairs the heat of 火 (ひへん) with action, giving the sense of “drying through energy or exposure.” It covers physical dryness (乾燥) and the edgy, fidgety mood in 焦燥.