Antonyms for "throwing a fit" can vary depending on the context and tone of the phrase. However, some possible alternatives might include "staying calm," "maintaining composure," "exhibiting restraint," "preserving peace," or "showing patience." Rather than resorting to explosive outbursts or tantrums, these antonyms suggest a more measured and rational approach to managing one's emotions and reactions. By taking a deep breath, practicing mindfulness, or engaging in healthy coping strategies, individuals can avoid the negative consequences of throwing a fit and cultivate a more positive and constructive mindset.