cooperationist

/koʊˌɑːpəˈreɪʃənɪst/
noun
  1. A person who supports or promotes cooperation, especially in politics or social movements.
    • The cooperationist argued that countries should share resources peacefully.
    • The party's cooperationists pushed for a joint agreement with the opposition.
    • As a cooperationist, she believed in working with rival groups to solve problems.
Antonyms
What does "cooperationist" mean? | whatsthatwordmean | whatsthatwordmean