expert
nounUK /ˈek.spɜːt/
US /ˈek.spɝːt/
An expert is someone who knows a lot about something.
She is an expert at fixing computers.
RELATED WORDS
OTHER MEANINGS
2. Very good at doing something because of practice.
He is an expert swimmer.
3. A person who gives advice in a special subject.
The police asked a bomb expert for help.
4. Showing great skill or knowledge.
She gave an expert opinion on the painting.