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Synonyms

improve

American  
[im-proov] / ɪmˈpruv /

verb (used with object)

improved, improving
  1. to bring into a more desirable or excellent condition.

    He took vitamins to improve his health.

    Synonyms:
    emend, amend
    Antonyms:
    worsen
  2. to make (land) more useful, profitable, or valuable by enclosure, cultivation, etc.

  3. to increase the value of (real property) by betterments, as the construction of buildings and sewers.

  4. to make good use of; turn to account.

    He improved the stopover by seeing a client with offices there.


verb (used without object)

improved, improving
  1. to increase in value, excellence, etc.; become better.

    The military situation is improving.

    Antonyms:
    worsen
  2. to make improvements, as by revision, addition, or change.

    None of the younger violinists have been able to improve on his interpretation of that work.

improve British  
/ ɪmˈpruːv /

verb

  1. to make or become better in quality; ameliorate

  2. (tr) to make (buildings, land, etc) more valuable by additions or betterment

  3. (intr; usually foll by on or upon) to achieve a better standard or quality in comparison (with)

    to improve on last year's crop

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. informal improving

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What are other ways to say improve?

To improve something is to bring it into a more desirable or excellent condition. How is improve different from the verbs ameliorate and better? Find out on Thesaurus.com. 

Other Word Forms

  • improvability noun
  • improvable adjective
  • improvableness noun
  • improvably adverb
  • improver noun
  • improvingly adverb
  • preimprove verb (used with object)
  • quasi-improved adjective
  • superimproved adjective
  • well-improved adjective

Etymology

Origin of improve

First recorded in 1425–75; late Middle English improuen, emprouen from Anglo-French emprouer “to turn (something) into profit,” derivative of phrase en prou “into profit,” equivalent to en ( en- 1 ) + prou, Old French prou, preu from Late Latin prōde (est), by reanalysis of Latin prōdest “(it) is beneficial, of use,” with prōde taken as a neuter noun ( proud ); the sound v was made by association with prove, approve

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.

Gina: Well in at the weights, having won the Ultima after the weights were published for this and plenty of signs of encouragement that he will get this trip and even improve for it.

From BBC • Apr. 9, 2026

Inside the company, Tubi is using AI to improve employee productivity.

From The Wall Street Journal • Apr. 9, 2026

Without that knowledge, it is difficult to improve the performance and reliability of quantum systems.

From Science Daily • Apr. 8, 2026

This will be the first major test case of how well AI can improve productivity at this relatively early stage.

From Barron's • Apr. 8, 2026

If women and girls in other cities could organize a union to improve their jobs, those in St. Louis could, too!

From "Fannie Never Flinched" by Mary Cronk Farrell