Daily feature upsetting real idiot (9)
I believe the answer is:
editorial
'daily feature' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'upsetting real idiot' is the wordplay.
'upsetting' is an anagram indicator.
'real'+'idiot'='realidiot'
'realidiot' anagrammed gives 'EDITORIAL'.
Can you help me to learn more?
(Other definitions for editorial that I've seen before include "Newspaper opinion piece" , "Article written" , "Leading article" , "Newspaper item" , "Newspaper article giving the editor's opinions" .)