The phrase "lost her temper" signifies what reaction?

The phrase "lost her temper" signifies a reaction of anger. This idiom is commonly used to describe a situation where someone becomes enraged or frustrated, typically in response to a provoking event or behavior. The imagery conveyed by the phrase suggests that the person has reached a breaking point, resulting in an emotional outburst.

When someone "loses their temper," it implies a departure from a state of self-control to one of emotional upheaval, which is distinctly different from calmness, joy, or indifference. Therefore, recognizing "lost her temper" as a representation of anger aligns with the common understanding of this expression.