A "Hyper"...

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hy·per

²    /ˈhaɪpər/ Show Spelled

[hahy-per] Show IPA

–noun Informal .

a person who promotes or publicizes events, people, etc., especially one who uses flamboyant or questionable methods; promoter; publicist.

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Origin:
1910–15, Americanism , for an earlier sense; hype¹ + -er¹

 

^{From Dictionary.com}