Reach, achieve (6)
I believe the answer is:
attain
This clue is a double definition.
'reach' is the first definition.
(synonyms)
'achieve' is the second definition.
(synonyms)
(Other definitions for attain that I've seen before include "Gain with effort" , "Succeed in accomplishing; reach" , "Reach with effort" , "Reach (a particular age)" , "Reach (a specified age)" .)