Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

hyper

adjective
 
 
/ˈhaɪ.pər/ US  /-pɚ/ informal

Definition

too excited and energetic: I don't let him have sweet fizzy drinks because they tend to make him hyper. → See also hyperactiveBecoming too excited and easily upset
(Definition of hyper adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“hyper” in other dictionaries

More Results for “hyper”

Word of the Day

everything under the sun

everything that exists or is possible

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More