1. a person who strongly advocates for peace and opposes war or violence, especially as part of a political movement
Usage: informal; sometimes derogatory

Examples

• The peacenik organized protests against the military intervention.
• During the Vietnam War, many peaceniks gathered in Washington to demonstrate.
• He was labeled a peacenik for his opposition to nuclear weapons.
• The senator dismissed his critics as naive peaceniks.
• She proudly called herself a peacenik and worked for conflict resolution.
• The peacenik movement gained momentum in the 1960s.