[hahy-per] /ˈhaɪ pər/ Informal.

overexcited; overstimulated; keyed up.
seriously or obsessively concerned; fanatical; rabid:
She’s hyper about noise pollution.
a person who is hyper.
[hahy-per] /ˈhaɪ pər/
noun, Informal.
a person who promotes or publicizes events, people, etc., especially one who uses flamboyant or questionable methods; promoter; publicist.
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 , in the formation of compound words (hyperthyroid).
(informal) overactive; overexcited
above, over, or in excess: hypercritical
(in medicine) denoting an abnormal excess: hyperacidity
indicating that a chemical compound contains a greater than usual amount of an element: hyperoxide

1942 as a colloquial shortening of hyperactive.

word-forming element meaning “over, above, beyond, exceedingly, to excess,” from Greek hyper (prep. and adv.) “over, beyond, overmuch, above measure,” from PIE super- “over” (see super-).

hyper- pref.

A prefix that means “excessive” or “excessively,” especially in medical terms like hypertension and hyperthyroidism.

n,n phr

A publicist; promoter; advertiser; flack

[1960+; fr hype2]


Related Terms

throw a fit

[fr Greek hyper, ”super,” and in the first sense probably fr medical terms like hyperactive, hyperkinetic, hyperthyroid, etc; in some sources this term is associated with hipped and hippish, fr hypochondriac, ”melancholic,” first found in the early 18th century]


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  • Hyperacidity

    [hahy-per-uh-sid-i-tee] /ˌhaɪ pər əˈsɪd ɪ ti/ noun, Pathology. 1. excessive , as of the gastric juice. /ˌhaɪpərəˈsɪdɪtɪ/ noun 1. excess acidity of the gastrointestinal tract, esp the stomach, producing a burning sensation hyperacidity hy·per·a·cid·i·ty (hī’pər-ə-sĭd’ĭ-tē) n. Abnormally high acidity, as of the stomach.

  • Hyperactive

    [hahy-per-ak-tiv] /ˌhaɪ pərˈæk tɪv/ adjective 1. unusually or abnormally : a company’s hyperactive growth; the child’s hyperactive imagination. 2. (of children) displaying exaggerated physical activity sometimes associated with neurologic or psychologic causes. 3. . /ˌhaɪpərˈæktɪv/ adjective 1. abnormally active adj. 1852, from hyper- + active. hyperactive hy·per·ac·tive (hī’pər-āk’tĭv) adj.

  • Hyperactivity

    [hahy-per-ak-tiv-i-tee] /ˌhaɪ pər ækˈtɪv ɪ ti/ noun 1. the condition of being . 2. . n. 1852, from hyper- + activity. hyperactivity hy·per·ac·tiv·i·ty (hī’pər-āk-tĭv’ĭ-tē) n. A general restlessness or excess of movement, as that in children with minimal brain dysfunction or hyperkinesis. hyperactivity (hī’pər-āk-tĭv’ĭ-tē) An abnormally high level of activity or excitement shown by a […]

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