The word "more unpeaceful" implies a state of disorder, disturbance, and unrest. However, there are several antonyms for this phrase. Peaceful, tranquil, calm, serene, and harmonious are some antonyms that describe a state of calmness, tranquility, and peacefulness. In a peaceful state, there is no agitation or turmoil. Tranquil describes a state of peacefulness and calmness. Calm suggests a state of quietness, stillness, and composure. Serene implies a state of absolute calmness and tranquility. Harmonious suggests a state of balance and order. Therefore, antonyms for "more unpeaceful" suggests a state of calmness and stillness.