Pacifist (noun)

1. A person who advocates for and believes in the principles of peace and nonviolence.
2. A person who is opposed to war and violence.

Origin:

Derived from the latin word "pax" which means "peace" and the suffix "-fist" which means "person who advocates for".

Examples:

1. The pacifist believed that all conflicts should be resolved through peaceful means.
2. The group of pacifists organized a protest against the war.
3. The pacifist movement gained momentum during the Cold War.
4. The pacifist argued that war only leads to more violence and suffering.
5. The politician was a pacifist and advocated for peaceful resolutions to conflicts.