No sense creating unity (7)
I believe the answer is:
oneness
'unity' is the definition.
('oneness' can be a synonym of 'unity')
'no sense creating' is the wordplay.
'creating' indicates anagramming the letters.
'no'+'sense'='nosense'
'nosense' with letters rearranged gives 'ONENESS'.
(Other definitions for oneness that I've seen before include "Singular quality" , "Unified state" , "Uniqueness" , "single state" , "#Unique quality" .)