A person who believes in or advocates for conciliation as a method of resolving disputes, or who practices conciliation professionally.
Conciliation + -ist, the suffix denoting a person who practices or believes in something. This word emerged in the 19th century as labor disputes required specialized professionals.
A 'conciliationist' is what you call someone philosophically committed to peace—they don't just want conflict to end, they believe dialogue and mutual understanding are *the right way* to solve problems. It's a term of respect (or sometimes, dismissal by hardliners).
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