as in heated
being in a state of increased activity or agitation
the boy manages to panic himself by his own overactive imagination
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Example Sentences
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Recent Examples of overactive
These dietary patterns appear to calm overactive immune responses and improve cellular repair processes.
—
William A. Haseltine, Forbes.com, 16 Sep. 2025
Restoring brain glucose levels calmed the overactive CCK interneurons, in turn regulating the function of those excitatory pyramidal neurons, and the short-term memory problems seen in the mice were resolved.
—New Atlas, 11 Sep. 2025
Despite the mess in her apartment, the man, like everyone else in her life, brushes off her fears as the exaggerations of an overactive imagination.
—Marya E. Gates, IndieWire, 9 Sep. 2025
Inflammatory Skin Conditions Inflammatory skin conditions like eczema (atopic dermatitis) and psoriasis develop due to an overactive immune system.
—Lindsay Curtis, Health, 4 Sep. 2025
See All Example Sentences for overactive
William A. Haseltine, Forbes.com, 16 Sep. 2025
Restoring brain glucose levels calmed the overactive CCK interneurons, in turn regulating the function of those excitatory pyramidal neurons, and the short-term memory problems seen in the mice were resolved.
—New Atlas, 11 Sep. 2025
Despite the mess in her apartment, the man, like everyone else in her life, brushes off her fears as the exaggerations of an overactive imagination.
—Marya E. Gates, IndieWire, 9 Sep. 2025
Inflammatory Skin Conditions Inflammatory skin conditions like eczema (atopic dermatitis) and psoriasis develop due to an overactive immune system.
—Lindsay Curtis, Health, 4 Sep. 2025
See All Example Sentences for overactive
Recent Examples of Synonyms for overactive
Adjective
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There are heated confrontations and a slap, and Alma ruins her shot at tenure after stealing a colleague's prescription pad to get more pain meds.—
Gerrad Hall,
Entertainment Weekly,
19 Oct. 2025
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Guest rooms are a chic combination of old world charm and modern luxury, with generously sized marble bathrooms with heated floors and rain showers.—
Sophie Friedman,
AFAR Media,
18 Oct. 2025
Adjective
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There are so many people who are excited to have me back in some capacity as Superman.—
Charles Infosino,
Cincinnati Enquirer,
23 Oct. 2025
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Today, scientists are extremely excited about how AI can be used to predict the way molecules interact, transforming areas like drug discovery and materials science.—
Reed Albergotti,
semafor.com,
22 Oct. 2025
Adjective
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In a September 15 TikTok video posted by user @belmelly, a dog sat in the backseat of a vehicle, agitated and barking nonstop.—
Liz O'Connell,
MSNBC Newsweek,
13 Oct. 2025
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Two passengers later described him as agitated and angry.—
Sarah Rumpf-Whitten,
FOXNews.com,
8 Oct. 2025
Adjective
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Reading poetry out loud also requires us to pause for punctuation or line breaks, increasing our parasympathetic tone and dampening our hyperactive sympathetic nervous system.—
K.J.S. “Sunny” Anand,
Time,
15 Oct. 2025
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Consider children who have five inattentive symptoms and five hyperactive-impulsive symptoms.—
Carol Mathews,
The Conversation,
15 Oct. 2025
Cite this Entry
“Overactive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/overactive. Accessed 24 Oct. 2025.
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