pacifist
n. countable B2 Upper Intermediate US //ˈpæsɪfɪst// UK //pˈæsɪfˌɪst// paci·fist
n. someone who believes that war and violence are always wrong. A person like this refuses to fight or use force to solve problems.
n. a person who holds the belief that war and violence are unjustifiable and that all disputes should be settled by peaceful means.
He is a lifelong pacifist who refuses to join the army.
During the conflict, many pacifists were imprisoned for refusing to participate in the mandatory military draft.
The philosopher's transition from a soldier to a committed pacifist was driven by his firsthand experience of the devastation wrought by modern industrial warfare.
From French pacifiste, equivalent to pacific + -ist.
Usage
Can also be used as an adjective to describe beliefs or actions that support peace.