Bring about - a result (6)
I believe the answer is:
effect
This clue is a double definition.
'bring about' is the first definition.
(synonyms)
'a result' is the second definition.
(I know that result can be written as effect)
(Other definitions for effect that I've seen before include "Resultant change" , "See 23" , "Change produced by impact or other cause" , "Consequence, aftermath" , "Consequential change; state of becoming operative" .)