invaluable
Americanadjective
adjective
Other Word Forms
Etymology
Origin of invaluable
First recorded in 1570–80; in- 3 + valuable, in obsolete sense “capable of valuation”
Explanation
If you're robbed, much of what is stolen can be replaced. All you need is the cash value of what was lost. But some things––family photos, heirloom jewelry––are invaluable, meaning extremely valuable, or priceless. At first glance, you would think that invaluable means "not valuable." But to understand its meaning, you'd have to know that it was formed from the prefix in- "not" plus the verb value, plus the suffix –able "able to be." So something invaluable has such great value that its value can't be calculated.
Vocabulary lists containing invaluable
Mandela's Nobel Peace Prize Acceptance Address
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The Miraculous Journey of Edward Tulane
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The Magic Fish
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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.
Earning just over two dollars for an hour of video, her mundane recordings are invaluable for global tech companies teaching machines how to move like humans in the real world.
From Barron's • Jun. 11, 2026
That community aspect of Fringe is invaluable to artists.
From Los Angeles Times • Jun. 10, 2026
“This $1 million donation will be an invaluable resource to continue to help shape the futures of the young people we serve.”
From MarketWatch • Jun. 8, 2026
He has been invaluable and, quite rightly, is in the conversation for PFA Player of the Year.
From BBC • May 30, 2026
Frank played an invaluable role at the lab, including work on the calu- trons.
From "Big Science" by Michael Hiltzik
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
