lessen
Americanverb (used without object)
verb (used with object)
-
to make less; reduce.
-
Archaic. to represent as less; depreciate; disparage.
verb
-
to make or become less
-
(tr) to make little of
Other Word Forms
Etymology
Origin of lessen
First recorded in 1300–50; late Middle English lessenen, lasnen; equivalent to less + -en 1
Explanation
To lessen is to make smaller, to reduce, or to weaken. A high school football coach might try to lessen head injuries by improving the quality of the team's helmets. If your cold symptoms lessen, it means you're sneezing and coughing much less and can probably go to school. If the value of your Pez collection lessens, it means those plastic candy dispensers can't be sold for quite as much money on eBay. And your friend might recommend that you take a yoga class or learn to meditate, especially if she thinks you should lessen your stress and anxiety.
Vocabulary lists containing lessen
Going Down: Synonyms for "Fall"
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Chop Chop: Synonyms for "Cut"
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Road Trip Magical Mystery List A
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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 Advancing Water Reuse Act seeks to lessen the local impacts of water-guzzling operations such as data centers, which have sparked pushback across the country amid a mass build-out to power the artificial intelligence boom.
From The Wall Street Journal • May 13, 2026
The move was designed to lessen the costs for taxpayers in the host city, and the L.A.
From Los Angeles Times • Apr. 30, 2026
"The helicopter is expected to carry out targeted water drops on the Elan Valley wildfire during the next few hours to extinguish or lessen the impacts of the fire," he said.
From BBC • Apr. 29, 2026
And the time horizon for the hoped-for boost in economic productivity that would lessen price pressures is highly uncertain.
From MarketWatch • Apr. 27, 2026
"A whole lots of folks wonders about that without gitting anywhere. But as I was saying, caint a single doggone drop of paint move out of the factory lessen it comes through Lucius Brockway's hands."
From "Invisible Man" by Ralph Ellison
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.
