Efficient person that's paid by channel I have contracted (10)
I believe the answer is:
productive
'efficient' is the definition.
(I've seen this before)
'person that's paid by channel i have contracted' is the wordplay.
I cannot really understand how this works, but
'person' could be 'pro' (pro is a kind of person) and 'pro' is found within the answer.
'channel' could be 'duct' (synonyms) and 'duct' is found within the answer.
'i' is within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for productive that I've seen before include "Yielding results" , "efficient" .)