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Synonyms

expertise

1 American  
[ek-sper-teez] / ˌɛk spərˈtiz /

noun

  1. expert skill or knowledge; expertness; know-how.

    business expertise.

  2. a written opinion by an expert, as concerning the authenticity or value of a work of art, manuscript, etc.

expertise 2 American  
[ek-sper-tahyz] / ˈɛk spərˌtaɪz /

verb (used with or without object)

Chiefly British.
expertised, expertising

  1. expertize.

expertise British  
/ ˌɛkspɜːˈtiːz /

noun

  1. special skill, knowledge, or judgment; expertness

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of expertise

First recorded in 1865–70; from French: “survey, report (made by experts),” with -ise understood as an abstract noun suffix; see expert, -ise 2

Explanation

When you're an expert at something, you show expertise — or an exceptional knowledge of the subject. "He had expertise in accounting, having excelled in math, but he had even more expertise in dancing, his hobby since a small child." Expertise has obvious roots in the word expert. Just about any interest or field has a place for experts. Just as one individual has expertise in world religions, another may have expertise in computer gaming. Working hard or immersing yourself in a specialty leads to expertise, and it comes through both study and hands-on experience.

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Vocabulary lists containing expertise

Academic Vocabulary Toolkit 1, Words 41-50

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

"The Book Thief" by Markus Zusak, Part Eight

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English Words Derived from French, List 4

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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.

“We view this as another thesis-confirming quarter, as MPS leverages its power silicon expertise and diversified customer base to drive consistent beat-and-raise results,” William Blair analyst Sebastien Naji wrote in a research note Friday.

From Barron's • May 1, 2026

He said his expertise in property valuation, housing markets and the economic impact of property taxation are critical for the role of assessor.

From Los Angeles Times • May 1, 2026

Hearn's promise to leverage expertise from other sports to create new superstars has been made before.

From BBC • Apr. 30, 2026

"That is the charm of this method -- you could do this with a normal, optical setup and without much domain expertise," You says.

From Science Daily • Apr. 28, 2026

“You must have Cherokee blood,” she said of the straightness, when all I had was Big Ma’s hot comb and Mrs.’s curling expertise.

From "P.S. Be Eleven" by Rita Williams-Garcia

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.