Expert
WordNet
adjective
(1) Having or showing knowledge and skill and aptitude
"Adept in handicrafts"
"An adept juggler"
"An expert job"
"A good mechanic"
"A practiced marksman"
"A proficient engineer"
"A lesser-known but no less skillful composer"
"The effect was achieved by skillful retouching"
noun
(2) A person with special knowledge or ability who performs skillfully
WiktionaryText
Adjective
- Extraordinarily capable or knowledgeable.
- I am expert at making a simple situation complex.
- My cousin is an expert pianist.
- Characteristic of an expert.
- This problem requires expert knowledge.