Ill-will I’m into, say? Out of order (9)
I believe the answer is:
animosity
'ill-will' is the definition.
(I've seen this before)
'i'm into say? out of order' is the wordplay.
'out of order' indicates an anagram.
'im'+'into'+'say'='imintosay'
'imintosay' with letters rearranged gives 'ANIMOSITY'.
(Other definitions for animosity that I've seen before include "A spirit of hostility, rancour" , "Maoist yin generates spirit of hostility" , "A spirit of hostility, enmity" , "Hate" , "Feeling of ill will and hostility" .)