Year said to be rough: it seems likely (1,4,3)
I believe the answer is:
i dare say
'rough it seems likely' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'year said to be' is the wordplay.
'to be' indicates an anagram.
'year'+'said'='yearsaid'
'yearsaid' anagrammed gives 'I DARE SAY'.
Can you help me to learn more?
(Other definitions for i dare say that I've seen before include "It wouldn't surprise me" , "It is probable" , "It's possible" , "Quite possibly" , "One would think" .)