Informal.| 1. | overexcited; overstimulated; keyed up. |
| 2. | seriously or obsessively concerned; fanatical; rabid: She's hyper about noise pollution. |
| 3. | hyperactive. |
| 4. | a person who is hyper. |
| a prefix appearing in loanwords from Greek, where it meant “over,” usually implying excess or exaggeration (hyperbole); on this model used, especially as opposed to hypo-, in the formation of compound words (hyperthyroid). |
hyper
[ˈhɑɪpɚ]
|
hyper- pref.
Over; above; beyond: hyperflexion.
Excessive; excessively: hyperhydration.