Became hysterical is a phrase that is often used to describe someone who loses control of their emotions in a highly intense way. There are several synonyms that can be used to describe this same feeling, including going berserk, flipping out, having a meltdown, going ballistic, or freaking out. These expressions are often used to describe a sudden outburst of emotion that is not easily controlled by the person experiencing it. Whether it is due to anger, fear, or overwhelming stress, the result is usually a state of extreme emotional distress that can be difficult to overcome. Overall, there are many different ways to describe becoming hysterical, each with their unique tone and implications.