invaluable

1 of 2

adjective

in·​valu·​able (ˌ)in-ˈval-yə-bəl How to pronounce invaluable (audio)
-yə-wə-bəl
-yü(-ə)-bəl
Synonyms of invaluable
: valuable beyond estimation : priceless
providing invaluable assistance
invaluableness noun
invaluably
(ˌ)in-ˈval-yə-blē How to pronounce invaluable (audio)
-yə-wə-blē
-yü(-ə)-blē
adverb

invaluableness

2 of 2

noun

in·​valuableness
"+
: the quality or state of being invaluable

Did you know?

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

Adjective 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
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
This advance notice is invaluable for proactive preparation, allowing local governments and businesses to assess vulnerabilities and implement continuity plans. Monica Sanders, Forbes.com, 23 June 2026 The calendars that remain, found in attics and at church book sales, have become invaluable, teaching botanists how rising temperatures have altered flower habitat. Literary Hub, 18 June 2026 The victory secured invaluable resources from the Downtown Pop-Opportunity Fund, in partnership with Invest Atlanta. La'tasha Givens, CBS News, 18 June 2026 In addition to current players, TEU also features several retired legends who provide attendees with the invaluable opportunity to learn from some of the best to ever play the game. Ryan Morik, FOXNews.com, 17 June 2026 See All Example Sentences for invaluable

Word History

Etymology

Adjective

in- entry 1 + value, verb + -able

First Known Use

Adjective

1576, in the meaning defined above

Time Traveler
The first known use of invaluable was in 1576

Browse Nearby Words

Cite this Entry

“Invaluable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invaluable. Accessed 25 Jun. 2026.

Kids Definition

invaluable

adjective
in·​valu·​able (ˈ)in-ˈval-yə(-wə)-bəl How to pronounce invaluable (audio)
: having value too great to be estimated
invaluably adverb

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