There are many words and phrases that can be used as synonyms for "war haters," each with slightly different connotations. "Anti-war activists" is a common alternative, suggesting those actively working to prevent the outbreak of conflict. "Pacifists" carries a similar meaning, emphasizing a commitment to peaceful solutions. "Doves" is a more informal term for those who oppose militarism, while "peaceniks" has a slightly more counter-cultural connotation. "Humanitarians" or "peacekeepers" suggest a broader commitment to social justice and conflict resolution. However they are described, those who oppose war and strive for peace play a vital role in promoting a more just and equitable world.