“Disinclined to,” says the note (6)
I believe the answer is:
averse
'disinclined to' is the definition.
(I've seen this before)
'says the note' is the wordplay.
'says' becomes 'avers' ('aver' can be a synonym of 'say').
'the note' becomes 'e' (musical note).
'avers'+'e'='AVERSE'
(Other definitions for averse that I've seen before include "Unwilling or disinclined, perhaps to hard work" , "Reaves (anag)" , "Disinclined, maybe to hard work" , "Loath, reluctant" , "Disinclined - sounds like a poem" .)