No sense breaking unified state (7)
I believe the answer is:
oneness
'unified state' is the definition.
(I've seen this before)
'no sense breaking' is the wordplay.
'breaking' indicates an anagram.
'no'+'sense'='nosense'
'nosense' with letters rearranged gives 'ONENESS'.
(Other definitions for oneness that I've seen before include "Singular state" , "Agreement" , "Uniqueness" , "#Unique quality" , "Unified state" .)