- present participle of wane.
waning
Americanadjective
-
decreasing in strength, intensity, etc..
Many teens in focus groups expressed waning enthusiasm for social media.
-
declining in power, importance, prosperity, etc..
The recent hacking of the retailer’s credit card system will have devastating implications for its already waning business.
-
drawing to a close; approaching an end.
The bill will likely be passed in the waning days of this legislative session.
-
(of the moon) decreasing in the extent of its illuminated portion after the full moon.
The crescent of fine white sand, wrapped around the bay, looked like a waning moon.
noun
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the process of decreasing, declining, or coming to an end.
The Middle Ages occurred between the waning of the Roman Empire and the beginning of the Renaissance.
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(of the moon) the process of decreasing in the extent of its illuminated portion after the full moon.
Onion seeds are planted in the fall, during the waning of the Harvest Moon.
Other Word Forms
Etymology
Origin of waning
First recorded before 900; wan(e) ( def. ) + -ing 2 ( def. ) for the adjective senses; wan(e) ( def. ) + -ing 1 ( def. ) for the noun senses
Explanation
If the moon was full, and now it's getting slimmer each night, it's a waning moon: it's getting gradually smaller. Waning can be used for anything that diminishes, like the brightness of the sunlight in the late afternoon, your interest in cartoons, or your influence over your teenage daughter's fashion choices. It comes from the Old English verb wǫnian, which means "to lessen."
Vocabulary lists containing waning
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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.
The drop in downtown office leasing appears to be waning, Condon said.
From Los Angeles Times ● Oct. 7, 2026
Outgoing US presidents have often doubled down on foreign policy in the waning days of their terms, as it's the area in which they have the most power.
From Barron's ● Oct. 5, 2026
On that front, confidence in the boom’s staying power seems to be waning.
From The Wall Street Journal ● Sep. 29, 2026
But it’s telling that, unless a massively popular sport with a built-in audience is involved, the turnout for a Pitt movie is waning.
From Salon ● Sep. 28, 2026
In the waning minutes before game time there was a small stream of black passing white to get to the Carter side, and white passing black to get to the Permian side.
From "Friday Night Lights: A Town, A Team, And A Dream" by H.G. Bissinger
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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.