Skillful ones (6)
I believe the answer is:
adepts
'skillful ones' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for adepts that I've seen before include "Very skilled persons" , "Those completely skilled in their work" , "Pasted by skilled people" , "Proficient people" , "Virtuosos, hotshots" .)