"Broke loose" is a phrase used to describe a situation where something becomes uncontrollable or chaotic. There are several synonyms for "broke loose" that can be used depending on the specific context of the situation. Some of these synonyms include "escaped," "unleashed," "released," "let loose," "set free," and "busted out." These synonyms are commonly used to describe situations where something or someone has suddenly become free or out of control. In some contexts, the phrase "broke loose" can also be replaced with phrases such as "went haywire," "went crazy," and "went wild" to describe a situation where there is a sudden change in behavior.