British spelling; a person who disfavours or withholds approval, support, or preference from someone or something.
British spelling of disfavorer, using the -ou- spelling. Creates an agent noun from the verb disfavour.
A 'disfavourer' in British English sounds particularly authoritative—perhaps because the extra 'u' makes it sound more formal and official, like a title someone might actually hold in government.
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