The term "cat fit" usually refers to a sudden outburst of anger, irritability, or frustration. The word "cat" in this context implies a sudden, unpredictable behavior usually associated with felines. However, there are several antonyms for "cat fit" that connote calmness, composure, and poise. These antonyms include serenity, equanimity, tranquility, coolness, and collectedness. When a person exhibits these characteristics, they are less likely to experience a "cat fit" and are more likely to deal with problems in a rational and centered way. Therefore, it is essential to cultivate these qualities to prevent sudden outbursts of anger or frustration.