What the opposition has to say to any problem (3)
I believe the answer is:
nay
'what the opposition has to say' is the definition.
I can't tell whether this defines the answer.
'any problem' is the wordplay.
'problem' indicates an anagram.
'any' anagrammed gives 'NAY'.
'to' is the link.
Can you help me to learn more?
(Other definitions for nay that I've seen before include "Archaic negative" , "Denial" , "No - a negative vote" , "No (dialect); or rather" , "Negative answer" .)