Insisted order is order (8)
I believe the answer is:
tidiness
'is order' is the definition.
(I've seen this before)
'insisted order' is the wordplay.
'order' is an anagram indicator.
'insisted' is an anagram of 'TIDINESS'.
(Other definitions for tidiness that I've seen before include "Orderly quality" , "good order" , "Quality of neatness and orderliness" , "sense of order" , "Insisted on neatness." .)