Able sons done in (7)
I believe the answer is:
skilled
'able' is the definition.
(I've seen this in another clue)
'sons done in' is the wordplay.
I cannot quite see how this works, but
'sons' could be 's' and 's' is located in the answer.
'done' could be 'led' (leading is a kind of doing) and 'led' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for skilled that I've seen before include "Showing expertise" , "Trained, qualified" , "Able" , "Expert, adroit" , "Adept, clever" .)