Over the edge is a phrase that means going beyond the limit or losing control. Synonyms for this phrase include "on the brink", "out of control", "pushed too far", "on the verge", "at the limit", and "on the cusp". These synonyms are commonly used to describe a situation where someone is about to lose their temper or sanity. Context is key when using these phrases as they all convey a sense of crisis. Whether it is an emotional or physical crisis, these synonyms provide a way of communicating that someone is about to experience a significant change in their life.