She had a dismal, forbidding appearance, constantly grimacing and wearing nothing but dark, somber dresses.
en.wikipedia.org This was a place said to have no spoken language, but communication only by signssuch as nods, raised eyebrows, grimaces, and smiles.
en.wikipedia.org This is not to be confused with a similar but usually involuntary expression of anxiety known as a grimace.
en.wikipedia.org Specific symptoms included tics, grimacing, movement disorders, difficulty swallowing, poor coordination, hyporeflexia, chorea, and seizures.
en.wikipedia.org