Definition of peacenik noun from the Oxford Advanced Learner's Dictionary

 

peacenik

 noun
noun
BrE BrE//ˈpiːsnɪk//
 
; NAmE NAmE//ˈpiːsnɪk//
 
(informal, sometimes disapproving)
 
jump to other results
a pacifist (= somebody who believes war and violence are always wrong and refuses to fight) Word Origin 1960s: from peace + -nik.
See the Oxford Advanced American Dictionary entry: peacenik