The phrase "blew steam" might evoke images of frustration or anger, but there are a variety of antonyms that can shift the tone entirely. For example, "calmed down" suggests a sense of peace and tranquility, while "cooled off" implies a return to rational thought. "Relaxed" and "unwound" both indicate a loosening of tension, while "chilled out" emphasizes a more casual, carefree attitude. Ultimately, the choice of antonym will depend on the context and the desired tone of the message. Whether seeking to convey a sense of serenity or simply to counteract negativity, there are many ways to flip the script on "blew steam.