"At wits end" refers to a state of extreme frustration or confusion. Antonyms for this phrase may include "calm," "collected," "composed," "steady," "capable," "confident," "assured," "undaunted," "unperturbed," "unflappable," "unruffled," and "unfazed." These antonyms convey a sense of composure, control, and confidence that is the exact opposite of feeling at one's wits end. When you are faced with a daunting challenge or a stressful situation, remaining calm and collected can help you to think clearly and make better decisions. By cultivating an unflappable demeanor, you can navigate even the most challenging circumstances with grace and poise.