Sceptical sort acting so atrociously (8)
I believe the answer is:
agnostic
'sceptical sort' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'acting so atrociously' is the wordplay.
'acting so' anagrams to 'AGNOSTIC'.
But, I'm not clear how this is indicated.
Can you help me to learn more?
(Other definitions for agnostic that I've seen before include "He finds it difficult to believe" , "Unbeliever; sceptic" , "One believing God is unknowable" , "Religious sceptic" , "One doubts" .)