Blowing steam is a phrase used to indicate frustration, anger or excitement.To find an antonym for blowing steam, one can look for words that represent calmness, composure or relaxation. Some possible antonyms for blowing steam are relaxation, serenity or tranquility. While blowing steam expresses negative emotions, antonyms of it shows positive feelings that help improve one's mental health. Other antonyms include self-control, poise or equanimity that indicate a sense of balance and control. Whenever someone is blowing steam, they can find an antonym to help them achieve the opposite state of mind and develop better emotional regulation skills.