invaluable

[in-val-yoo-uh-buhl]

adjective

1. beyond calculable or appraisable value; of inestimable worth; priceless.

   an invaluable art collection; her invaluable assistance.

   Synonyms: precious
   Antonyms: worthless

invaluable

/ ɪnˈvæljʊəbəl /

adjective

1. having great value that is impossible to calculate; priceless

Other Word Forms

• invaluableness noun
• invaluably adverb

Word History and Origins

Origin of invaluable¹

First recorded in 1570–80; in- ³ + valuable, in obsolete sense “capable of valuation”

Example Sentences

Lucia Kendall impressed on her debut in a 3-0 win over Australia last month so to experience a sold-out Wembley from the start would have been invaluable.

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Rob Byass, 69, who owns the barn and volunteers for the charity, said the donations were "invaluable, especially at the moment when everybody is considerably strained financially. Places like this really help".

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Its arrival also marks the resurrection of Criterion’s invaluable Eclipse line, a no-frills, hitherto exclusively DVD series that bundled often-obscure titles, usually grouped by director.

Read more on The Wall Street Journal

"When your 'laboratory' is the atmosphere, it's not every day you can run experiments like this one. It was an invaluable opportunity to get a more accurate picture of what's happening on Earth."

Read more on Science Daily

Bonta said his office “has supported the Cassirers’ quest for justice for two decades,” and “will continue to fight with them for the rightful return of this invaluable family heirloom.”

Read more on Los Angeles Times

Related Words

• helpful 
• valuable