A person who practices, believes in, or advocates for Brahminism and the teachings or traditions of the Brahmin tradition.
From 'brahminism' plus the suffix '-ist' meaning one who practices or believes in something. This creates a noun for a person committed to brahminical beliefs.
The suffix '-ist' was attached to Indian philosophical terms by 19th-century European scholars trying to categorize Indian spirituality—so a 'brahminist' was how English speakers referred to someone devoted to Brahminic philosophy.
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