overactive
Americanadjective
adjective
-
inordinately active
-
(of the thyroid or adrenal gland, nervous system, etc) functioning at too high a capacity
Other Word Forms
Etymology
Origin of overactive
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Researchers want to determine whether these medicines can change how microglia process energy and reduce their tendency to become overactive.
From Science Daily ● Jul. 20, 2026
"I'm a fierce perfectionist and there is an overactive, hugely self-critical voice in my head - my whole life is an exercise in trying to shake that," he says.
From BBC ● Dec. 31, 2025
Axonics makes an implantable device that treats bowel and bladder conditions, such as overactive bladder.
From Barron's ● Oct. 30, 2025
“I have a prescription for an overactive bladder.”
From The Wall Street Journal ● Oct. 17, 2025
It might be my overactive imagination, but Ren’s smile seems tighter than everyone else’s, his happiness for me strained.
From "Warcross" by Marie Lu
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
