Peacemonger is a word commonly used to describe someone who advocates for peace or works towards maintaining peace. Its antonyms, on the other hand, refer to individuals who promote war, conflict or discord. Some potential antonyms for the word peacemonger may include warmonger, hawk, aggressor, instigator, troublemaker, agitator, and saboteur. These words all suggest a person who actively seeks out conflict or unrest rather than striving for peaceful solutions. While peacemongers work to bring people together and find common ground, these antonyms represent those who actively work to tear people apart and encourage division instead of unity.