Solution provided by politicians we reject (6)
I believe the answer is:
answer
'solution' is the definition.
(I know that solution can be written as answer)
'provided by politicians we reject' is the wordplay.
'provided by' says the answer is hidden in the clue (the answer is provided within the clue).
'ANSWER' can be found hidden inside 'politicians we reject'.
(Other definitions for answer that I've seen before include "Reaction to a question" , "Solve - solution" , "Reply or 8 across" , "Reply or solution" , "'A soft . . . . . . turneth away wrath'" .)