Skilful answer, right? (6)
I believe the answer is:
adroit
'skilful' is the definition.
(adroit can mean skilful or masterful)
'answer right?' is the wordplay.
I cannot really see how this works, but
'answer' could be 'a' (abbreviation eg in Q and A) and 'a' is present in the answer.
'right?' could be 'droit' (I've seen this before) and 'droit' is found within the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for adroit that I've seen before include "resourceful" , "Nimble and skilful" , "Quick and clever in action or thought" , "handy" , "Deft and proficient" .)