I clear that foul camp (10)
I believe the answer is:
theatrical
'camp' is the definition.
(thesaurus)
'i clear that foul' is the wordplay.
'foul' is an anagram indicator.
'i'+'clear'+'that'='iclearthat'
'iclearthat' is an anagram of 'THEATRICAL'.
(Other definitions for theatrical that I've seen before include "Relating to acting/actors" , "Excessively dramatic" , "Artificial and exaggerated" , "Stagy" , "Showbiz" .)