疲劳 píláo fatigue
fatigue; wearily; weariness; weary
How to remember 疲劳: 疲 weak + 劳 to labor = fatigue.
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How it is used
- Fatigue / physical or mental tiredness - 感到疲劳 (gǎndào píláo) feel fatigued, 疲劳驾驶 (píláo jiàshǐ) driving while tired.
- More clinical/formal than 累 (lèi, tired); also used technically for material fatigue (金属疲劳 metal fatigue).
- Shows up in health, safety, and workplace contexts.