The phrase "blowing kingdom come" refers to a sudden and explosive situation, usually caused by an explosion or a powerful force. Its antonyms, on the other hand, convey concepts of stillness, calmness, and peacefulness. For instance, words like tranquil, serene, and placid represent a sense of peacefulness and calmness. Other antonyms for "blowing kingdom come" may include words like controlled, orderly, and measured. These words signify a sense of caution and composure rather than sudden and explosive action. Using these antonyms in place of the phrase "blowing kingdom come" can paint a picture of a more controlled and peaceful situation.