Foreign order I've set aside (8)
I believe the answer is:
override
'set aside' is the definition.
(thesaurus)
'foreign order i've' is the wordplay.
'foreign' indicates anagramming the letters (foreign order of the letters).
'order'+'ive'='orderive'
'orderive' with letters rearranged gives 'OVERRIDE'.
(Other definitions for override that I've seen before include "Cancel by higher authority" , "Use one's authority to reject or cancel a decision" , "Be more important than" , "Set aside by superior authority" , "Disregard" .)