For anger, eyebrows lower and tense up, often at a downward angle. Eyes tighten, too, and the lips may be pursed or held stiffly open. The eyes are staring and piercing. Fear, on the other hand, entails similar contractions but upward. Whether open or closed, the mouth is tense, and both upper and lower eyelids are lifted. Finally, surprise or shock will show itself in elevated brows—rounded rather than triangular, like with sadness. The upper eyelids lift up and the lower eyelids stretch downward, opening the eyes wide. Sometimes, the jaw can hang loosely open.
