Expert Definition

ĕkspûrt
experts, expertest
noun
experts
A person who is very skillful or highly trained and informed in some special field.
Webster's New World
A person with a high degree of skill in or knowledge of a certain subject.
American Heritage
An individual of recognized knowledge in a particular topic, typically confirmed by academic standing and publications, who is called upon by one of the parties to testify in court as to his or her opinion of the underlying facts. Also referred to as expert witness.
Webster's New World Law

(chess) A player ranking just below master.

Wiktionary
adjective
expertest
Very skillful; having much training and knowledge in some special field.
Webster's New World
Of or from an expert.
An expert opinion.
Webster's New World
I am expert at making a simple situation complex.
My cousin is an expert pianist.
Wiktionary
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Other Word Forms of Expert

Noun

Singular:
expert
Plural:
experts

Adjective

Base Form:
expert
Superlative:
expertest

Origin of Expert

  • Middle English from Old French experienced from Latin expertus past participle of experīrī to try per-3 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French, from Latin expertus.

    From Wiktionary

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