overactive
Americanadjective
adjective
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inordinately active
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(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.
“As most fiction, it is a composite, an amalgam of personal experience, research and my fertile, overactive imagination,” Raicek said.
From The Wall Street Journal • Apr. 16, 2026
By supplying stable oxygen while calming this overactive response, the gel helps restore healthier conditions for tissue repair.
From Science Daily • Feb. 22, 2026
Axonics makes an implantable device that treats bowel and bladder conditions, such as overactive bladder.
From Barron's • Oct. 30, 2025
Instead, he said that the unusual incident may have been due to the bee colony becoming too large for its beehive and becoming "overactive" when the beekeeper handled it.
From BBC • Jul. 8, 2025
Noah has an overactive imagination, written on every school report I’ve ever gotten.
From "I'll Give You the Sun" by Jandy Nelson
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.
