Setter has anger about EC idiot (8)

I believe the answer is:

imbecile

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'idiot' is the definition.
(synonyms)

'setter has anger about ec' is the wordplay.
'setter has' becomes 'im' (I can't justify this - if you can you should give a lot more credence to this answer).
'anger' becomes 'bile'.
'about' is an insertion indicator.
'bile' enclosing 'ec' is 'becile'.
'im'+'becile'='IMBECILE'

Can you help me to learn more?

(Other definitions for imbecile that I've seen before include "Abusive word for foolish person" , "An unintelligent person, very low IQ" , "fool" , "Sap" , "Silly person or idiot" .)

I've seen this clue in The Sun.

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