Funny writing in The Outsider (8)
I believe the answer is:
stranger
'the outsider' is the definition.
(I've seen this before)
'funny writing' is the wordplay.
'funny' becomes 'strange' ('strange' can be a synonym of 'funny').
'writing' becomes 'r' (I've seen this in other clues).
'strange'+'r'='STRANGER'
'in' is the link.
(Other definitions for stranger that I've seen before include "unfamiliar figure" , "Person in place or company to which he does not belong" , "'Weirder, odder (8)'" , "More rum" , "Odder, more peculiar" .)