Stray raven I so dislike (8)
I believe the answer is:
aversion
'dislike' is the definition.
(aversion is a kind of dislike)
'stray raven i so' is the wordplay.
'stray' is an anagram indicator.
'raven'+'i'+'so'='raveniso'
'raveniso' is an anagram of 'AVERSION'.
(Other definitions for aversion that I've seen before include "phobia" , "Hate" , "A version of strong dislike" , "Extreme dislike" , "A feeling of dislike or reluctance" .)