adjective
hyper
HEYE-puh
adjective
1
Informal: overly excited, energetic, or wound up.
"The kids got hyper after eating all that candy."
How to Use Hyper
Learner’s notesIn plain EnglishBursting with restless energy — bouncing off the walls.
Common mistake
Don't confuse with "hyper-" as a prefix (as in hypertension) — used alone, "hyper" is casual slang for excitable energy.
When to use it
Informal; used in everyday speech far more than in technical or formal writing.
Common pairings
get hyper
act hyper
Word Forms
hypered past tense, hypers singular
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Etymology
A shortened, everyday form of words built from the prefix "hyper-" (meaning "over" or "excessive"), most commonly standing in for "hyperactive."