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
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
The thyroid then releases thyroid hormone into the blood, causing the symptoms of an overactive thyroid gland or decreased thyroid hormone production as a result.
—Alyce Collins, MSNBC Newsweek, 25 Aug. 2025
This is important because hair loss can often be a sign of thyroid problems; both an underactive and an overactive thyroid can disrupt hair growth, resulting in hair thinning or shedding.
—Varsha Patel, Refinery29, 21 Aug. 2025
Such individuals may be socially awkward, struggle with emotional regulation, and have an overactive fantasy life, Girgis says.
—Robert Hart, Time, 5 Aug. 2025
See All Example Sentences for overactive
Lindsay Curtis, Health, 4 Sep. 2025
The thyroid then releases thyroid hormone into the blood, causing the symptoms of an overactive thyroid gland or decreased thyroid hormone production as a result.
—Alyce Collins, MSNBC Newsweek, 25 Aug. 2025
This is important because hair loss can often be a sign of thyroid problems; both an underactive and an overactive thyroid can disrupt hair growth, resulting in hair thinning or shedding.
—Varsha Patel, Refinery29, 21 Aug. 2025
Such individuals may be socially awkward, struggle with emotional regulation, and have an overactive fantasy life, Girgis says.
—Robert Hart, Time, 5 Aug. 2025
See All Example Sentences for overactive
Recent Examples of Synonyms for overactive
Adjective
-
Guests can enjoy amenities such as a heated pool, hot tub, sauna, rotating art exhibitions, and landscaped courtyards with firepits and hammocks.—
Taryn White,
Travel + Leisure,
5 Oct. 2025
-
While what kind of crust a Key Lime pie should have is often up for discussion, there’s no debate as heated as what should top the tangy pie.—
Amber Love Bond,
Southern Living,
4 Oct. 2025
Adjective
-
Jones is particularly excited about the opportunities for personalization.—
Jessica Coacci,
Fortune,
9 Oct. 2025
-
But while countless fans couldn’t be more excited for Bad Bunny’s showcase, other people — including the president of the United States — aren’t as keen that a primarily Spanish-speaking artist got the gig.—
Hannah Dailey,
Billboard,
8 Oct. 2025
Adjective
-
Are assassins like Kirk’s killer simply pathological outliers among agitated but otherwise self-restrained populations?—
Ron Barrett,
The Conversation,
2 Oct. 2025
-
According to the complaint, video footage from a nearby convenience store showed Cullen in the shop appearing agitated and holding a handgun.—
Bridget Fogarty,
jsonline.com,
1 Oct. 2025
Adjective
-
However, people with ASD are more likely to have trouble shifting their focus rather than being easily distracted and hyperactive in general.—
Laura Dorwart,
Health,
29 Sep. 2025
-
The anterior cingulate cortex, your brain’s conflict detector, becomes hyperactive in ambiguous situations.—
Anne-Laure Le Cunff,
Big Think,
29 Sep. 2025
Cite this Entry
“Overactive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/overactive. Accessed 10 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share