lessen

[les-uhn] / ˈlɛs ən /

VERB

lower, reduce

Synonyms

STRONGEST

abate curtail decrease dilute diminish dwindle ease erode impair lighten minimize mitigate narrow shrink slacken taper off weaken

STRONG

abridge amputate attenuate clip close contract crop cut de-escalate decline degrade downsize drain minify moderate soft pedal taper thin truncate

WEAK

become smaller cut back die down grow less roll back slack up slow down take the bite out take the edge off take the sting out wind down

Antonyms

STRONGEST

develop enlarge expand extend grow increase intensify irritate lengthen prolong strengthen worsen

STRONG

go up rise stretch

WEAK

raise

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.

Pfizer is hopeful that the experimental drug can lessen the side effects like nausea and diarrhea that occur with GLP-1s.

From MarketWatch • Jun. 6, 2026

“Working together may not have been in the cards for us; however, that does not lessen my enthusiasm for the band,” he wrote.

From Los Angeles Times • Jun. 5, 2026

The research team has also gathered evidence from animal studies suggesting that the tomato-soy juice can lessen inflammation and reduce the severity of chronic pancreatitis.

From Science Daily • May 30, 2026

With far less data available about the rare strain, health officials said there are fewer medical interventions to lessen its spread.

From The Wall Street Journal • May 22, 2026

He recovered possession of himself before the tourniquet was finished and loosened it immediately to lessen the danger of gangrene.

From "Catch-22" by Joseph Heller

Vocabulary lists containing lessen

Going Down: Synonyms for "Fall"

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Chop Chop: Synonyms for "Cut"

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Road Trip Magical Mystery List A

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!