The antonyms for the phrase "more crack up" can be calm, composed, serene, tranquil, and relaxed. These words indicate a state of peace and stability, which is the opposite of feeling overwhelmed, stressed, and nervous. While "more crack up" expresses a position of emotional turmoil and unrest, the antonyms convey a sense of balance and harmony. When people feel tranquil and composed, they can deal with life's challenges with more resilience and a positive outlook. Therefore, it is essential to seek ways to reduce stress and cultivate calmness in daily life to prevent "more crack up" from occurring.