A person who believes in or advocates for disintegration, especially the breaking apart of a unified political state or organization.
From disintegration + -ist (a person who practices or believes in something). This political term describes those who oppose unified states.
During the Soviet Union's final years, Western media called independence movements 'disintegrationist forces'—one nation's freedom fighters were another's separatists. The word itself became politically loaded because it frames breaking apart as negative.
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