A person who attends or participates in a convention; a delegate or attendee of a formal assembly.
From 'convention' + '-ary' (suffix denoting a person associated with something, from Latin '-arius'). Primarily used in French historical contexts, less common in English.
During the French Revolution, the term 'conventionary' (French: conventionnel) became infamous because the National Convention voted to execute King Louis XVI—an unprecedented act.
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