The phrase "send mad" has several synonyms, including "drive crazy," "make insane," and "provoke mental breakdown." Other phrases that can be used to convey a similar meaning may include "push over the edge," "trigger a mental collapse," and "cause a meltdown." These phrases are often used to describe situations where someone's emotions or behavior become extremely erratic or uncontrollable. The use of these synonyms can help to paint a clearer picture of the severity of the situation and the impact it has on those involved, without relying on offensive or stigmatizing language.