# expert

Pronunciation: say "EK-spurt" US /ˈɛk.spɜɹt/, UK /ˈɛk.spɜːt/

## Noun

1. Someone who knows a great deal about a particular subject or is highly skilled in it.
   - Simple: A person who knows a great deal about a subject or is very skilled at it.
   - _The court called a handwriting expert to testify about the disputed signature._
   - _Climate experts warn that the region's water supplies are shrinking._

## Adjective

2. Having or showing great skill or knowledge in a particular field.
   - Simple: Very skilled at something or knowing a lot about it, or showing that skill.
   - _Only an expert climber should attempt the north face in winter._
   - _She proved expert at calming nervous patients before surgery._

## Adjective

3. Proven by experience; experienced, veteran. *(obsolete)*
   - Simple: Tested by long experience and skilled from years of practice.

## Other meanings

- (noun) In US chess ratings, a player rated just below master.
- (verb) To have an expert look over or check something, such as a rare stamp or musical instrument.

## Origin

This word came into English through Middle English and Old French (where it meant "experienced"), going back to Latin expertus, the perfect active participle of experior meaning "to try."

Source: DictionaryAI, https://dictionaryai.com/define/expert (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).