in·​valu·​able | \ (ˌ)in-ˈval-yə-bəl How to pronounce invaluable (audio) , -yə-wə-bəl, -yü(-ə)-bəl\

Definition of invaluable

: valuable beyond estimation : priceless providing invaluable assistance

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Other Words from invaluable

invaluableness noun
invaluably \ (ˌ)in-​ˈval-​yə-​blē How to pronounce invaluably (audio) , -​yə-​wə-​blē , -​yü(-​ə)-​blē \ adverb

Synonyms for invaluable


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invaluable = valuable?

Many people find it confusing that the in- prefix at the beginning of invaluable apparently lacks the meaning "not" found in a number of other words, such as invalid, inarticulate, and insane. In fact, the prefix does indicate negation, but in a way that is not immediately obvious. The original (and current) meaning of invaluable is "valuable beyond estimation"; the word describes something so precious that one cannot assign a price to it. This, clearly, is the opposite of the meaning "having no value; valueless" that the word might seem to carry. Invaluable actually has been recorded in the sense "without value," but such use has been exceedingly rare and is practically nonexistent today.

Examples of invaluable in a Sentence

Unfortunately, though, Sally does not respond to lithium, which has been invaluable for many patients with manic-depressive illness … — Oliver Sacks, New York Review of Books, 25 Sept. 2008 … the scrolls provide an invaluable snapshot of at least one important strain in early Judaism—though they are by no means a complete record of Jewish belief at that time. — Jeremy Lott, Lingua Franca, February 2001 I stayed there only a month or so but it was an invaluable experience …  : that month's residence provided the inspiration for a novel I wrote much later, Sophie's Choice. — William Styron, This Quiet Dust and Other Writings, (1953) 1982 Their help has been invaluable to us. the list of likely donors proved to be invaluable to our fund-raising efforts
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Recent Examples on the Web The experience could prove invaluable, as could the lessons learned. Ira Winderman,, "ASK IRA: Would adding veterans just get in the way for Heat?," 6 Aug. 2019 Kemper’s insights prove to be invaluable, and with the addition of the academic knowledge of Dr. Wendy Carr, the Behavioral Science Unit and their study of serial killers is born. Lauren Huff,, "Everything you need to remember about Mindhunter before watching season 2," 5 Aug. 2019 For explorers at National Geographic, technology and exploration go hand in hand—cutting-edge science and high-tech tools are invaluable to their expeditions. National Geographic, "Engineering and Robotics on the MIT Campus," 10 Sep. 2019 The midfield motor that makes Manchester City go would soon follow his 10-month-old son to bed, rest being invaluable to a world-class soccer player at this time of year. Kevin Baxter, Los Angeles Times, "Column: Manchester City and Kevin De Bruyne have eyes on more prizes," 10 Aug. 2019 ZDNet notes that bugs like these are invaluable to manufacturers of intercept tools and surveillance software, and the right buyer would likely pay millions for access to them before Apple is able to patch its software in defense. Jon Porter, The Verge, "Google discovered several iPhone security flaws, and Apple still hasn’t patched one," 30 July 2019 Classical Notes Early on in their formative years, the members of the Aizuri Quartet got some invaluable advice from their chamber music coaches. David Weininger,, "‘Just go for it’: An adventurous quartet, always in the moment," 19 June 2019 Working as both artist-in-residence and programmer at the storefront venue, Hadero got invaluable first-hand experience in the way a performance space can engage with a neighborhood and nurture a creative scene. Andrew Gilbert, The Mercury News, "YBCA names rising star in Bay Area arts scene to key curating post," 11 Sep. 2019 Being around a first-team environment on a daily basis is no doubt of huge benefit in terms of exposure to the demands of being a professional footballer and gaining invaluable experience., "Why Mason Greenwood Has to Now Start Games for Manchester United," 9 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'invaluable.' 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 invaluable

1576, in the meaning defined above

History and Etymology for invaluable

in- entry 1 + value, verb + -able

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Statistics for invaluable

Last Updated

6 Nov 2019

Time Traveler for invaluable

The first known use of invaluable was in 1576

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More Definitions for invaluable


How to pronounce invaluable (audio)

English Language Learners Definition of invaluable

: extremely valuable or useful


in·​valu·​able | \ in-ˈval-yə-wə-bəl How to pronounce invaluable (audio) \

Kids Definition of invaluable

: priceless … his advice and counsel will prove invaluable in dealing with such problems as might arise.— Robert Lawson, Rabbit Hill

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Comments on invaluable

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


to speed up the process or progress of

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