noun / verb
grimace
GRIM-us/ɡrˈɪmʌs/
A twisted facial expression showing pain or dislike, or making such an expression.
Her wrinkled nose and tightened lips form a grimace of disgust.

Etymology
The French word meant a grotesque or ugly face. The English sense focuses on facial distortion as an expression of pain, disgust, or disapproval.
In context
But unlike the serene, composed faces of the royal mummies around her, this woman's mouth was locked open in a wide, terrifying grimace of agony.
More examples
- A grimace crossed her face as she stepped on the sore foot.
- She tried to smile but managed only a grimace.
- The player grimaced after the awkward landing.
Forms
grimace · grimaces · grimaced · grimacing