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
Urinary incontinence can be part of having an overactive bladder (OAB), but the two conditions are not the same.
—
Madeleine Burry, Health, 30 Mar. 2024
However, in the modern era, this same mutation results in an overactive immune response, leading to the development of MS.
—Robert Pearl, Forbes, 28 Feb. 2024
See all Example Sentences for overactive 
Madeleine Burry, Health, 30 Mar. 2024
However, in the modern era, this same mutation results in an overactive immune response, leading to the development of MS.
—Robert Pearl, Forbes, 28 Feb. 2024
See all Example Sentences for overactive
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'overactive.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Overactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/overactive. Accessed 29 May. 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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