expert
Americannoun
-
a person who has special skill or knowledge in some particular field; specialist; authority.
a language expert.
- Synonyms:
- master, connoisseur
-
Military.
-
the highest rating in rifle marksmanship, above that of marksman and sharpshooter.
-
a person who has achieved such a rating.
-
adjective
-
possessing special skill or knowledge; trained by practice; skillful or skilled (often followed by in orat ).
an expert driver;
to be expert at driving a car.
- Synonyms:
- dexterous, proficient, experienced
- Antonyms:
- unskillful
-
pertaining to, coming from, or characteristic of an expert.
expert work;
expert advice.
verb (used with object)
noun
adjective
-
skilful or knowledgeable
-
of, involving, or done by an expert
an expert job
Related Words
See skillful.
Other Word Forms
- expertly adverb
- expertness noun
- nonexpert noun
- proexpert adjective
- unexpert adjective
Etymology
Origin of expert
First recorded in 1325–75; Middle English, from Latin expertus “tried,” past participle of experīrī “to try”; experience
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.
California voter data expert Paul Mitchell expressed astonishment about the Postal Service’s guidance.
From Los Angeles Times • Apr. 4, 2026
In the final months of the Biden administration, the FDA convened the expert advisory committee and presented its research on the six peptides.
From Salon • Apr. 4, 2026
"Refineries are working at full capacity," said an expert at French energy giant TotalEnergies which has six refineries across Europe.
From Barron's • Apr. 4, 2026
A cyber security expert told Forbes last year that Max is “insecure by design to serve its purpose: people surveillance.”
From The Wall Street Journal • Apr. 3, 2026
Schulz had been in trouble with the Gestapo and, as a result, lost his previous job as an oil expert.
From Nazi Saboteurs by Samantha Seiple
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.
