College to attempt to suppress article as a whole (7)
I believe the answer is:
unitary
'as a whole' is the definition.
(I've seen this before)
'college to attempt to suppress article' is the wordplay.
'college' becomes 'uni' (I've seen this in other clues**).
'to attempt' becomes 'try' ('try' can be a synonym of 'attempt').
'to suppress' indicates putting letters inside.
'article' becomes 'a' (indefinite article).
'try' going around 'a' is 'tary'.
'uni'+'tary'='UNITARY'
(Other definitions for unitary that I've seen before include "Single; uniform" , "as a whole" , "showing one nature" , "Marked by oneness" .)