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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.

Keep Reading on Vocabulary.com

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.

It’s the combination of storytelling chops, genuine enthusiasm, and subject matter expertise that makes this film exponentially better than your average band documentary.

From Salon • Apr. 28, 2026

Nevertheless, do the investors in the purchasing fund realize that its returns are artificially boosted by an accounting gimmick instead of investing expertise?

From MarketWatch • Apr. 27, 2026

"But this turned into a special case that required focused efforts and expertise of several different individuals. This was a complex mystery that required morphological, genetic, deep-sea and bioinformatics expertise to solve."

From Science Daily • Apr. 27, 2026

Stories like this prove that when private expertise and public resources join forces, we can create true equity and opportunity.

From The Wall Street Journal • Apr. 27, 2026

It had always been made clear that the expertise of librarians was unworthy of the term scholarship.

From "Strange the Dreamer" by Laini Taylor

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.