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
But conditions like an overactive thyroid, menopause, or early onset of a serious infection can, too, Gee says.
—
Angela Haupt, TIME, 24 Jan. 2025
Red light, for example, has been shown to improve acne by reducing inflammation, neutralizing acne-causing bacteria and targeting overactive oil glands.
—Varsha Patel, refinery29.com, 29 Dec. 2024
For example, diaphragmatic breathing can help calm the overactive nervous system and regulate breathing.
—Sarah Bence, Verywell Health, 24 Jan. 2025
Inflammatory Skin Conditions Inflammatory skin conditions like eczema (atopic dermatitis) and psoriasis develop due to an overactive immune system.
—Lindsay Curtis, Health, 20 Jan. 2025
See all Example Sentences for overactive 
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Angela Haupt, TIME, 24 Jan. 2025
Red light, for example, has been shown to improve acne by reducing inflammation, neutralizing acne-causing bacteria and targeting overactive oil glands.
—Varsha Patel, refinery29.com, 29 Dec. 2024
For example, diaphragmatic breathing can help calm the overactive nervous system and regulate breathing.
—Sarah Bence, Verywell Health, 24 Jan. 2025
Inflammatory Skin Conditions Inflammatory skin conditions like eczema (atopic dermatitis) and psoriasis develop due to an overactive immune system.
—Lindsay Curtis, Health, 20 Jan. 2025
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 11 Feb. 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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