expert

1 of 3

noun

ex·​pert ˈek-ˌspərt 

: one with the special skill or knowledge representing mastery of a particular subject

expert

2 of 3

adjective

ex·​pert ˈek-ˌspərt  ik-ˈspərt 

1

: having, involving, or displaying special skill or knowledge derived from training or experience

2

obsolete : experienced

expertly adverb

expertness noun

expert

3 of 3

verb

ex·​pert ˈek-ˌspərt 

experted; experting; experts

intransitive verb

: to serve as an expert

Synonyms

Noun

• master
• guru
• virtuoso
• wizard
• scholar
• specialist
• artist
• authority
• whiz
• maestro

Adjective

• virtuoso
• skillful
• artistic

Choose the Right Synonym for expert

proficient, adept, skilled, skillful, expert mean having great knowledge and experience in a trade or profession.

proficient implies a thorough competence derived from training and practice.

proficient in translating foreign languages

adept implies special aptitude as well as proficiency.

adept at doing long division

skilled stresses mastery of technique.

a skilled surgeon

skillful implies individual dexterity in execution or performance.

skillful drivers

expert implies extraordinary proficiency and often connotes knowledge as well as technical skill.

expert in the evaluation of wines

Examples of expert in a Sentence

Noun

She was an acknowledged expert on child development.

an expert at planning dinner parties

Adjective

We received some expert advice.

The company has become expert at adapting its products for new clients.

Recent Examples on the Web

Noun

Although state wildlife agencies and experts have noted that black bear attacks remain extremely rare, interactions in recent years have drawn national attention. —Thao Nguyen, USA Today, 27 June 2025

Legal experts say the ruling expands religious freedom rights and breaks from previous court precedent. —Solcyré Burga, Time, 27 June 2025

Adjective

Do the expert speakers have seats and water at their disposal? Are the speaking notes or teleprompters in place? —Adrian Dearnell, Forbes.com, 26 June 2025

Wing will share practical tools and give expert insight on keeping families safe from online predators, cyber-bullying, digital threats and more. —Orlando Sentinel Staff, The Orlando Sentinel, 26 June 2025

Verb

As in other agencies where highly qualified seasoned professionals have been asked to resign or retire across the HHS, so too could expert mental health professionals who are essential in combating addiction and mental health conditions like depression and anxiety. —Omer Awan, Forbes.com, 8 June 2025

The inserted name tends to be an off-handed, niche individual that the person on camera may not expert the videographer to know about. —Greta Cross, USA Today, 6 May 2025

Word History

Etymology

Noun

borrowed from French, going back to Middle French, derivative of expert expert entry 2

Adjective

Middle English, borrowed from Anglo-French, borrowed from Latin expertus "tested, shown to be true," from past participle of experīrī "to put to the test, attempt, have experience of, undergo" — more at experience entry 1

Verb

derivative of expert entry 1

First Known Use

Noun

1535, in the meaning defined above

Adjective

14th century, in the meaning defined at sense 2

Verb

circa 1889, in the meaning defined above

Phrases Containing expert

• efficiency expert
• expert opinion
• expert system
• expert witness

Rhymes for expert

• inexpert

Kids Definition

expert

1 of 2 adjective

ex·​pert ˈek-ˌspərt  ik-ˈspərt 

: showing special skill or knowledge gained from training or experience

expert advice

expertly adverb

expertness noun

expert

2 of 2 noun

ex·​pert ˈek-ˌspərt 

: a person with special skill in or knowledge of a subject

Legal Definition

expert

noun

ex·​pert

: a person with special or superior skill or knowledge in a particular area see also expert witness at witness