The phrase "went batty" is often used to describe someone who has lost control or become extremely agitated or irrational. Some synonyms for "went batty" include "went insane," "went crazy," "lost one's mind," "flipped out," "freaked out," "went off the deep end," "went bonkers," and "went nuts." These phrases all describe a sudden and overwhelming sense of panic or hysteria that can leave someone feeling out of control and desperate for help. Whether it's caused by stress, anxiety, or a severe mental illness, "going batty" is a terrifying experience that can leave a lasting impact on a person's psyche.