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
It’s estimated that 1% of Americans over the age of 12 have hyperthyroidism (also known as an overactive thyroid), a condition that occurs when your body produces more thyroid hormone than normal, according to the National Institute of Diabetes and Digestive and Kidney Diseases.
—
Caroline C. Boyle, USA TODAY, 10 Jan. 2025
Magnesium glycinate may help relieve migraine pain and reduce migraine frequency by relaxing blood vessels, reducing inflammation, and calming overactive nerve signals contributing to pain.
—Lindsay Curtis, Verywell Health, 9 Jan. 2025
Biologics slow or stop inflammation and target the overactive part of the immune system that causes psoriasis.
—Laura Schober, Health, 4 Jan. 2025
Eczema and Psoriasis Eczema and psoriasis are chronic skin conditions that cause skin redness, irritation, and itch due to abnormal or overactive immune responses.58
Both eczema and psoriasis can cause dry patches of skin throughout the body, including on the feet.
—Francisco J. Rivera Rosario, Health, 22 Dec. 2024
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Caroline C. Boyle, USA TODAY, 10 Jan. 2025
Magnesium glycinate may help relieve migraine pain and reduce migraine frequency by relaxing blood vessels, reducing inflammation, and calming overactive nerve signals contributing to pain.
—Lindsay Curtis, Verywell Health, 9 Jan. 2025
Biologics slow or stop inflammation and target the overactive part of the immune system that causes psoriasis.
—Laura Schober, Health, 4 Jan. 2025
Eczema and Psoriasis Eczema and psoriasis are chronic skin conditions that cause skin redness, irritation, and itch due to abnormal or overactive immune responses.58
Both eczema and psoriasis can cause dry patches of skin throughout the body, including on the feet.
—Francisco J. Rivera Rosario, Health, 22 Dec. 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 18 Jan. 2025.
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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