The answer to a mix-up (8)
I believe the answer is:
solution
'the answer' is the definition.
('solution' can be a synonym of 'answer')
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for solution that I've seen before include "What you're looking for" , "13 across" , "Elucidation - mixture of substances" , "The answer sought" , "Holmes often sought?" .)