invaluable

adjective

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

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

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 And as my educator wife can attest, 99 Cents Only stores are invaluable for underpaid, overworked teachers looking to stock up on school supplies and classroom decorations. Ryan Fonseca, Los Angeles Times, 11 Apr. 2024 The vivid recollections of Harris, who’s now 93, are invaluable to the documentary, says Ferrari. Julie Hinds, Detroit Free Press, 9 Apr. 2024 This acquisition not only expands Karat Home's footprint but also provides invaluable insights into high-end consumers and market trends. Kansas City Star, 8 Apr. 2024 Realizing that cybersecurity is everyone’s business, the book is devoid of complicated tech terminology and industry-specific jargon, making extensive and invaluable knowledge accessible to non-tech individuals. Tyler Shepherd, USA TODAY, 8 Apr. 2024 Now 100 years old, EEG remains an invaluable window into the activity of the brain. Giridhar Kalamangalam, Discover Magazine, 4 Apr. 2024 Yet even as Imax has become invaluable to filmmakers like Villeneuve and Nolan, the company struggles to get respect from Wall Street. Rebecca Rubin, Variety, 4 Apr. 2024 For new bowhunters and youth hunters, a hub-style ground blind is invaluable. Alex Robinson, Outdoor Life, 3 Apr. 2024 The efforts are part of a long history of attempts to gather invaluable data and observations when the moon temporarily blocks the sun’s light. Ashley Strickland, CNN, 3 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'invaluable.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

in- entry 1 + value, verb + -able

First Known Use

1576, in the meaning defined above

Time Traveler
The first known use of invaluable was in 1576

Dictionary Entries Near invaluable

Cite this Entry

“Invaluable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invaluable. Accessed 19 Apr. 2024.

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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