Meaning of hyper

hy•per

Pronunciation: (hī'pur), [key]
— Informal. Informal.
—adj.
  1. overexcited; overstimulated; keyed up.
  2. seriously or obsessively concerned; fanatical; rabid: She's hyper about noise pollution.
  3. hyperactive.
—n.
  1. a person who is hyper.

hy•per

Pronunciation: (hī'pur), [key]
— n. Informal.
  1. a person who promotes or publicizes events, people, etc., esp. one who uses flamboyant or questionable methods; promoter; publicist.

hyper-

Pronunciation: [key]
  1. a prefix appearing in loanwords from Greek, where it meant “over,” usually implying excess or exaggeration (hyperbole); on this model used, especially as opposed toin the formation of compound words (hyperthyroid). Cf. super-.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.