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Added 3 October 2026

expert

/ˈɛk.spɜːt/ adjective

In Latin: perītus, callidus Wiktionary

adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about expert at Wordnik → Where our words come from →

Extraordinary capable or knowledgeable.
I am expert at making a simple situation complex.
Characteristic of an expert.
This problem requires expert knowledge.
Proven, experienced, veteran.

noun

A person with extensive knowledge or ability in a given subject.
If an expert says it can't be done, get another expert. - David Ben-Gurion
A player ranking just below master.

verb

To have (something) reviewed or checked by an expert.

Origin

Inherited from Middle English expert, derived from Old French expert (“experienced”), espert, from Latin expertus (contracted from *experitus), perfect active participle of experior (“to try”), from ex- + *-perior.

From Wiktionary, via Kaikki.org (CC BY-SA)

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