Article about reckless rout (9)
I believe the answer is:
thrashing
'rout' is the definition.
(thesaurus)
'article about reckless' is the wordplay.
'article' becomes 'thing' (both can mean an object).
'about' indicates putting letters inside.
'reckless' becomes 'rash' (synonyms).
'thing' enclosing 'rash' is 'THRASHING'.
(Other definitions for thrashing that I've seen before include "A very heady defeat" , "punishment" , "beating" , "Hiding" .)