promulgator

/ˈprɑməlˌɡeɪtər/
noun
  1. A person or organization that makes a law, rule, or official announcement known to the public.
    • The king was the promulgator of the new legal code.
    • The city council acted as the promulgator of the zoning changes.
    • The government agency served as the promulgator of the health guidelines.
  2. A person or organization that spreads or promotes an idea, belief, or theory widely.
    • The website is a major promulgator of conspiracy theories.
    • She was a leading promulgator of environmental awareness in her community.
    • The author became a prominent promulgator of the new educational philosophy.
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