im·prove·ment | \im-ˈprüv-mənt \

Definition of improvement 

1 : the act or process of improving

2a : the state of being improved especially : enhanced value or excellence

b : an instance of such improvement : something that enhances value or excellence

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Synonyms & Antonyms for improvement


advance, advancement, breakthrough, enhancement, refinement



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Examples of improvement in a Sentence

Doctors were amazed by the sudden improvement in her medical condition. I've noticed a significant improvement in your work since the spring. The editor made some improvements to the article before it was printed. They spent the money on new kitchen cabinets and other home improvements.
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Recent Examples on the Web

The resolution welcomes the improvements in security conditions and the reduction in military confrontations between government forces and rebel groups. Fox News, "UN votes to cut UN-AU force in Sudan's Darfur region in half," 13 July 2018 Carolina finished fourth in rushing yards last season, but there's still room for improvement. Michael Middlehurst-schwartz, USA TODAY, "Panthers training camp questions: What can Norv Turner do for Cam Newton?," 6 July 2018 Another area where there's room for improvement is U of L Hospital's Leapfrog safety rating, which hasn't risen above a D yet. Morgan Watkins, The Courier-Journal, "University of Louisville Hospital says it's on mend minus KentuckyOne," 5 July 2018 California’s largest public-employee pension fund saw an upturn in profits generated from its investments in the last year, officials reported Thursday, a record that offered some improvement to its long-term fiscal stability. John Myers,, "CalPERS reports investment returns that improve the pension fund's long-term outlook," 12 July 2018 In the summer of 2017, after a 14-win improvement and UMBC’s first win in postseason history, about 60 to 70 kids came out. Jonas Shaffer,, "For UMBC men's basketball, March Madness still lingers at summer camps," 10 July 2018 Still, Wilson thinks that with improvements, such a PCSK9 gene editing treatment could be offered to heart disease patients with high cholesterol who can’t tolerate drugs that block the PCSK9 protein. Jocelyn Kaiser, Science | AAAS, "Gene edited monkeys offer hope for heart disease patients," 9 July 2018 The ship underwent refurbishment in 2014 with dry dock improvements to infrastructure in October, the company said. Doreen Christensen,, "Free $50 credit or kids sail free on Bahamas Paradise Cruise Line," 6 July 2018 Apple is also expected to refresh its 5.8-inch iPhone X with some specification improvements. Tom Warren, The Verge, "Apple reportedly launching new iPhones in blue, orange, and gold colors," 5 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'improvement.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of improvement

circa 1550, in the meaning defined at sense 1

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Statistics for improvement

Last Updated

3 Oct 2018

Look-up Popularity

Time Traveler for improvement

The first known use of improvement was circa 1550

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English Language Learners Definition of improvement

: the act of improving something : the act or process of making something better

: the quality of being better than before

: an addition or change that makes something better or more valuable


im·prove·ment | \im-ˈprüv-mənt \

Kids Definition of improvement

1 : the act or process of making something better His cooking needs improvement.

2 : increased value or excellence I've noticed improvement in your work.

3 : an addition or change that makes something better or more valuable We made improvements to our house.



Legal Definition of improvement 

: a usually permanent addition to or modification of real property that enhances its capital value and is distinguished from an ordinary repair in being designed to make the property more useful or valuable

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Comments on improvement

What made you want to look up improvement? Please tell us where you read or heard it (including the quote, if possible).


not any or not one

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