A person who believes in or practices amidism; someone in the midst of a group or community (archaic usage).
From 'amid' + '-ist' (person suffix), creating a term for an adherent of amidism or someone positioned in the middle of a group.
Amidist is so rare that it's barely recorded in English—it's the kind of word that shows how '-ist' endings were once applied more freely to create agent nouns, many of which never became established in actual usage.
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