Rat run closed off (9)
I believe the answer is:
scoundrel
'rat' is the definition.
(I've seen this before)
'run closed off' is the wordplay.
'off' indicates an anagram.
'run'+'closed'='runclosed'
'runclosed' anagrammed gives 'SCOUNDREL'.
(Other definitions for scoundrel that I've seen before include "Cad" , "Red consul may be a rogue" , "Rascal" , "Bounder" , "Unprincipled rogue" .)