The most common and most likely answer to this crossword clue is the 12 letter word AFTER-EFFECT
I've seen this crossword clue in Financial Times
A
F
T
E
R
-
E
F
F
E
C
T
Buddy explains!
The straight part
We know that "result" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case result = after-effect.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does AFTER-EFFECT mean?
AFTER-EFFECT noun- An effect; especially, one that is experienced only after a delay, or only in the long term.