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
As the Sjout for Sjogren's campaign explains, the disease causes a type of immune cell to become overactive.
—
Cara Lynn Shultz, PEOPLE, 21 Apr. 2026
These proteins, like tissue inhibitor of metalloproteinases-3 (TIMP3) and adenosine deaminase (ADA), are known to regulate inflammation by suppressing overactive immune responses, supporting healthy cellular communication and improving insulin production.
—Angelica P. Ahrens, The Conversation, 21 Apr. 2026
This showcases the importance of efforts by the White House and the Supreme Court to rein in an overactive regulatory state that often acts without proper authority from Congress.
—Editorial, Boston Herald, 18 Apr. 2026
When you’re flooded, your amygdala—your brain’s threat detector—becomes overactive, and your sympathetic nervous system kicks into high gear.
—Angela Haupt, Time, 10 Apr. 2026
See All Example Sentences for overactive
Cara Lynn Shultz, PEOPLE, 21 Apr. 2026
These proteins, like tissue inhibitor of metalloproteinases-3 (TIMP3) and adenosine deaminase (ADA), are known to regulate inflammation by suppressing overactive immune responses, supporting healthy cellular communication and improving insulin production.
—Angelica P. Ahrens, The Conversation, 21 Apr. 2026
This showcases the importance of efforts by the White House and the Supreme Court to rein in an overactive regulatory state that often acts without proper authority from Congress.
—Editorial, Boston Herald, 18 Apr. 2026
When you’re flooded, your amygdala—your brain’s threat detector—becomes overactive, and your sympathetic nervous system kicks into high gear.
—Angela Haupt, Time, 10 Apr. 2026
See All Example Sentences for overactive
Recent Examples of Synonyms for overactive
Adjective
-
Another thankless gig leads Ben to Cat Hardy (Li Jun Li), a nightclub singer with ties to Brendan Gleeson‘s Silvermane, a vicious mobster engaged in an increasingly heated conflict with the city’s mayor (Michael Kostroff).—
Daniel Fienberg,
HollywoodReporter,
22 May 2026
-
My quarters were one of 65 freestanding wood cabins (albeit with heated floors and rain showers).—
Julia Harrison,
Architectural Digest,
22 May 2026
Adjective
-
These customer success stories have got investors excited.—
David Prosser,
Forbes.com,
18 May 2026
-
A lot of kids were excited to see the live painting, because now kids are used to being on their phones.—
Los Angeles Times,
Los Angeles Times,
18 May 2026
Adjective
-
This tiny bird was alone and agitated.—
Lisa Hughes,
CBS News,
19 May 2026
-
Unproductively, in the confines of the smaller-scale Fyda-Mar stage, the discordant sensory barrage director Oanh Nguyen brings to bear landed on at least one theatergoer as an agitated, irritating distraction.—
Christopher Smith,
Oc Register,
13 May 2026
Adjective
-
Your Immune System May Become Balanced Vitamin D and zinc may also tamp down hyperactive immune responses that occur in autoimmune diseases (conditions in which the body attacks itself).—
Megan Nunn,
Verywell Health,
12 May 2026
-
But what should be a hyperactive, frenetic, and fractured mess instead has a curious, uncanny unity.—
Reed Jackson,
SPIN,
8 May 2026
Cite this Entry
“Overactive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/overactive. Accessed 24 May. 2026.
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