- skillful performance or ability without difficulty;
"his quick adeptness was a product of good design"
"he was famous for his facility as an archer"
- My teacher is adept at designing robots.
- Helen is adept in music and her husband is adept in drawing.
- She was adept at playing tennis.
- She was adept in playing tennis.
- She was adept at the fine art of irritating people.
- She (was adept at) playing tennis.