A person who advocates for equality; one who believes in or promotes equal rights and treatment for all people.
From equal + -ist (one who practices or advocates). The -ist suffix comes from Latin and Greek, forming agent nouns. Equalist is a less common variant of egalitarian.
Equalist' is rarely used compared to 'egalitarian'—it's one of those words that should exist logically but got crowded out by a competitor that sounded slightly better, showing how random historical chance shapes which words survive in a language.
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