as in heated
being in a state of increased activity or agitation
the boy manages to panic himself by his own overactive imagination
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of overactive
Using mice that had the genetic mutation that causes overactive LRRK2 and also had symptoms consistent with early Parkinson’s disease, the scientists tried feeding them the inhibitor for two weeks.
—
Khloe Quill, FOXNews.com, 7 July 2025
Inquiring and pathologically overactive minds want to know.
—Inga, San Diego Union-Tribune, 9 June 2025
Urinary Tract Infection Botox is an effective treatment for an overactive bladder.
—Carrie Madormo, Verywell Health, 5 June 2025
Eczema is a long-term condition where an overactive immune response causes skin inflammation (swelling) and irritation.1
Eczema leads to dry, itchy patches of skin that may ooze and become thicker over time.
—Sarah Hudgens, Health, 19 June 2025
See All Example Sentences for overactive
Khloe Quill, FOXNews.com, 7 July 2025
Inquiring and pathologically overactive minds want to know.
—Inga, San Diego Union-Tribune, 9 June 2025
Urinary Tract Infection Botox is an effective treatment for an overactive bladder.
—Carrie Madormo, Verywell Health, 5 June 2025
Eczema is a long-term condition where an overactive immune response causes skin inflammation (swelling) and irritation.1
Eczema leads to dry, itchy patches of skin that may ooze and become thicker over time.
—Sarah Hudgens, Health, 19 June 2025
See All Example Sentences for overactive
Recent Examples of Synonyms for overactive
Adjective
-
Boreyko's lab discovered that this effect can also be achieved in ice simply by placing a thin, flat disc of ice on a heated aluminum surface.—
Jennifer Ouellette,
ArsTechnica,
14 Aug. 2025
-
This thinking — amplified by extensive 24/7 hybrid media coverage and heated venture capital echo chambers — obscures a more nuanced transformation occurring at the periphery of traditional power structures.—
Cornelia C. Walther,
Forbes.com,
14 Aug. 2025
Adjective
-
The more companies move in this direction, the more consumers will be singing the praises of AI -- and feeling not only satisfied, but excited about returning to the brand in the future.—
Tomas Gorny,
Forbes.com,
19 Aug. 2025
-
Takeaway: What would a party look like in your context — one that potential customers would be excited about?—
Jed Brewer,
Rolling Stone,
19 Aug. 2025
Adjective
-
For example, strengthening humanity through compassion and empathy helps people show more care towards others rather than being agitated or impatient.—
Mary Crossan,
Forbes.com,
16 Aug. 2025
-
Dylan split out of the blue metal door, walking stiff, agitated, spat out on the heat of the late day.—
Literary Hub,
Literary Hub,
13 Aug. 2025
Adjective
-
In some cases, however, microglia and other immune cells become hyperactive and go into overdrive, thus causing inflammation and possible damage.—
Sandee LaMotte,
CNN Money,
7 Aug. 2025
-
Otherwise, only contact your local Arizona Game and Fish Department office if a bobcat has been acting overly aggressive or hyperactive.—
Shelby Slade,
AZCentral.com,
1 Aug. 2025
Cite this Entry
“Overactive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/overactive. Accessed 29 Aug. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share