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Definition of hyperactivity

hyperactivity

/ˌhaɪ.pɚ.ækˈtɪv.ə.ti/
hy · per · ac · tiv · i · ty
Adverb:hyperactively
•
Plural:hyperactivities
•
Adjective:hyperactive
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hyperactivity Lexical Profile

hyperactivity Game Scores & Validity

• noun

1

The state or condition of being abnormally or extremely active, often characterized by constant movement, restlessness, impulsiveness, and difficulty maintaining focus.

Example

"The pediatrician evaluated the child for signs of hyperactivity and attention deficit."

2

Excessive or abnormally increased physiological function in a specific organ, gland, or biological system.

Example

"The lab results indicated hyperactivity of the thyroid gland, requiring further endocrinological testing."

Synonyms
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Antonyms
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• Rhymes for hyperactivity

• Nearby Words

hyper
hyperactive
hyperactively
hyperactivity
hyperaggressive
hyperalert
hyperaware

Word Origin & Etymology

Coined in the late 19th century as a medical term combining the Greek prefix 'hyper-' (meaning 'over' or 'beyond') with 'activity', from Latin 'activitas'.

Cite this Entry

Wordmom. (2026). Definition of Hyperactivity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/hyperactivity
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