A person who believes in or advocates for energism; someone who emphasizes energy as the fundamental principle of reality.
From energism + -ist (Greek -istes, meaning 'one who practices or believes in'). Forms a person-noun to denote practitioners or believers in the energism philosophy.
An 'energist' is the kind of specialized word that appears in footnotes of Victorian philosophy texts—it names a specific type of thinker whose worldview didn't survive into modern times, making it a word about intellectual history.
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