A person who supports, defends, or is part of the established political, social, or religious institutions and the status quo.
From 'establishment' plus the suffix '-arian' (meaning 'person who follows or supports'). The term became common in 19th-century political discourse.
This word perfectly captures one side of a never-ending cultural debate: those who say institutions keep society stable versus those who say they just protect privilege—and linguistically, '-arian' words always sound more serious and organized!
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