promoter
noun
[ prəˈməʊtə ]
• a person or company that finances or organizes a sporting event, concert, or theatrical production.
• "a boxing promoter"
• a supporter of a cause or aim.
• "Mitterrand was a fierce promoter of European integration"
Similar:
advocate,
champion,
supporter,
backer,
upholder,
proponent,
exponent,
protagonist,
campaigner,
booster,
• an additive that increases the activity of a catalyst.
Origin:
late Middle English: from Anglo-Norman French promotour, from medieval Latin promotor (see promote).