What does a "grimace" signify?

A "grimace" signifies a facial expression that typically conveys discomfort, disapproval, or a reaction to something unpleasant. It often involves a twisting or contorting of the face that may indicate a negative emotional response, such as pain or frustration. This aligns perfectly with the meaning of the term, as grimacing usually involves visible expressions that are far from cheerful or pleasant.

In contrast, the other options suggest very different meanings. A cheerful expression would represent happiness or joy, which is the opposite of what a grimace conveys. Verbal communication refers to spoken or written words, not facial expressions, and a grimace is a non-verbal cue. Lastly, a form of greeting implies a friendly or polite gesture, which does not correspond with the typically negative connotation of a grimace. Therefore, recognizing that a grimace is specifically about a wry face or facial distortion solidifies its correct identification.