Hyperactivity

noun

noun ·6 syllables ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The quality of being hyperactive; excessive and pathological movement and restlessness. uncountable, usually

    "Having attention deficit hyperactivity disorder, or ADHD, is associated with a shorter life expectancy and a greater risk of mental health issues, according to a new study of more than 30,000 people with the disorder in the United Kingdom."

  2. 2
    a condition characterized by excessive restlessness and movement wordnet

Synonyms

All synonyms
hyperactivenesshyperactivenessoverextension

Example

More examples

"Leonardo Da Vinci is known today as a renowned painter, architect, inventor and scientist. Historical accounts say he was also a procrastinator and he never finished a number his projects including his Adoration of the Magi and perhaps even the Mona Lisa. To explain this behavior, a researcher from Kings College, London proposed a new theory — the great Da Vinci may have had Attention Deficit/Hyperactivity Disorder or ADHD."

Etymology

From hyper- + activity.

Related phrases

attention deficit hyperactivity disorderattention-deficit hyperactivity disordersympathetic hyperactivity

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.