A good series will continue to do well (4)
I believe the answer is:
grow
'continue to do well' is the definition.
I can't tell whether this definition defines the answer.
'a good series' is the wordplay.
'a good' becomes 'g' (abbreviation).
'series' becomes 'row' (I've seen this before).
'g'+'row'='GROW'
'will' is the link.
Can you help me to learn more?
(Other definitions for grow that I've seen before include "Gain in size" , "Expand" , "Increase in size" , "Burgeon" , "Become bigger" .)