A Mess produced by a foreign order (10)
I believe the answer is:
untidiness
'a mess' is the definition.
(thesaurus)
'by a foreign order' is the wordplay.
I cannot quite understand how this works, but
'order' could be 'tidiness' (tidiness is a kind of order) and 'tidiness' is present in the answer.
'a foreign' could be 'un' ('a' translated into French) and 'un' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'produced' is the link.
Can you help me to learn more?
(Other definitions for untidiness that I've seen before include "Lack of neatness" , "mess?" , "What orderly would dislike" .)