Skilled (at) (5)
I believe the answer is:
adept
(Other definitions for adept that I've seen before include "Skilful, expert" , "One who is very skilful" , "skilled performer" , "Skilful and adroit" , "Proficient - expert" .)
I believe the answer is:
adept
(Other definitions for adept that I've seen before include "Skilful, expert" , "One who is very skilful" , "skilled performer" , "Skilful and adroit" , "Proficient - expert" .)