overactive
adjective
over·ac·tive
ˌō-vər-ˈak-tiv 
: excessively or abnormally active
overactive glands
an overactive imagination
Synonyms
Examples of overactive in a Sentence
She has an overactive bladder.
His crazy ideas are products of an overactive imagination.
Recent Examples on the Web
These include treating overactive bladder and urinary incontinence due to nerve conditions, such as multiple sclerosis or spinal cord injury.
—
Rosanna Sutherby, Pharmd, Verywell Health, 27 Nov. 2024
People with overactive bladders will have that urge to go when hearing running water from a sink, toilet or shower.
—Jocelyn Solis-Moreira, CNN, 26 Nov. 2024
The exact cause of IBD remains uncertain, but it is thought to involve an overactive immune response, genetic predisposition and environmental triggers.
—Matt Robison, Newsweek, 20 Nov. 2024
In people with depression, imaging studies have shown that the memory and intellectual circuits are less active while the emotional signals are overactive, and that imbalance likely contributes to the negativity and hopelessness that are hallmarks of depression.
—Alice Park, TIME, 24 Oct. 2024
See all Example Sentences for overactive 
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Rosanna Sutherby, Pharmd, Verywell Health, 27 Nov. 2024
People with overactive bladders will have that urge to go when hearing running water from a sink, toilet or shower.
—Jocelyn Solis-Moreira, CNN, 26 Nov. 2024
The exact cause of IBD remains uncertain, but it is thought to involve an overactive immune response, genetic predisposition and environmental triggers.
—Matt Robison, Newsweek, 20 Nov. 2024
In people with depression, imaging studies have shown that the memory and intellectual circuits are less active while the emotional signals are overactive, and that imbalance likely contributes to the negativity and hopelessness that are hallmarks of depression.
—Alice Park, TIME, 24 Oct. 2024
See all Example Sentences for overactive
Dictionary Entries Near overactive
Cite this Entry
“Overactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/overactive. Accessed 17 Dec. 2024.
Copy CitationKids Definition
overactive
adjective
over·ac·tive
ˌō-və-ˈrak-tiv
: very active and especially abnormally so
an overactive thyroid
Medical Definition
overactive
adjective
over·ac·tive
ˌō-və-ˈrak-tiv
: excessively or abnormally active
an overactive mind
overactive glands
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