hyperactivity
noun
hy·per·ac·tiv·i·ty
ˌhī-pər-ˌak-ˈti-və-tē 
1
: the state or condition of being overly active
Canada geese are disarmingly expressive. … They disdain the frantic hyperactivity of smaller birds.—
Benjamin B. Bachman
Benjamin B. Bachman2
: increased levels of function or activity especially when considered abnormally excessive
She had developed delusions of invincibility, along with bouts of hyperactivity and severe insomnia.—Per Ola and Emily D'Aulaire
Per Ola and Emily D'Aulaire
especially
: higher than usual levels of movement and activity (such as excessive talking or fidgeting) typically associated with attention deficit hyperactivity disorder
An estimated 1 in 50 school-age children in the United States, receive stimulant medication to help quell inattentiveness and hyperactivity. —Christine Mlot
Christine Mlot Examples of hyperactivity in a Sentence
Recent Examples on the Web
As a teenager, he was diagnosed with attention deficit disorder, attention deficit/hyperactivity disorder, severe depression and bipolar disorder.
—Natalie Eilbert, Journal Sentinel, 14 Nov. 2024
Kids who deal with symptoms of anxiety, attention-deficit/hyperactivity disorder, and other conditions may present with a tendency to talk more.
—Emily Edlynn, Parents, 1 Nov. 2024
Depositphotos View 1 Images Spanning nearly 100 laboratories in 45 countries, landmark research has, for the first time, shown an association between genetic brain size and neurological conditions such as Parkinson's disease and attention-deficit/hyperactivity disorder (ADHD).
—New Atlas, 25 Oct. 2024
Attention-deficit/hyperactivity disorder (ADHD) and anxiety are separate conditions that can affect a person’s mood and behavior.
—Carrie Madormo, Rn, Health, 18 Oct. 2024
See all Example Sentences for hyperactivity 
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Natalie Eilbert, Journal Sentinel, 14 Nov. 2024
Kids who deal with symptoms of anxiety, attention-deficit/hyperactivity disorder, and other conditions may present with a tendency to talk more.
—Emily Edlynn, Parents, 1 Nov. 2024
Depositphotos View 1 Images Spanning nearly 100 laboratories in 45 countries, landmark research has, for the first time, shown an association between genetic brain size and neurological conditions such as Parkinson's disease and attention-deficit/hyperactivity disorder (ADHD).
—New Atlas, 25 Oct. 2024
Attention-deficit/hyperactivity disorder (ADHD) and anxiety are separate conditions that can affect a person’s mood and behavior.
—Carrie Madormo, Rn, Health, 18 Oct. 2024
See all Example Sentences for hyperactivity
Dictionary Entries Near hyperactivity
Cite this Entry
“Hyperactivity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperactivity. Accessed 1 Dec. 2024.
Copy CitationMedical Definition
hyperactivity
noun
hy·per·ac·tiv·i·ty
ˌhī-pə-ˌrak-ˈtiv-ət-ē
plural hyperactivities
: a state or condition of being excessively or pathologically active
especially
: attention deficit hyperactivity disorder
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