The antonyms for the expression "most failed" include "most successful," "excellent," "outstanding," "satisfactory," and "commendable." These words imply success, achievement, and excellence in one's endeavors. They are opposite in meaning to "most failed," which suggests lack of success, defeat, and disappointment. While "most failed" is a negative expression, the antonyms convey positivity and optimism, encouraging individuals to strive for success and excel in their pursuits. As such, using antonyms of "most failed" can instill a sense of confidence, motivation, and intelligence that can lead to success in both personal and professional life.