Terrible corrupt actor with debts (9)
I believe the answer is:
atrocious
'terrible' is the definition.
(I know that terrible can be written as atrocious)
'corrupt actor with debts' is the wordplay.
'corrupt' indicates an anagram.
'with' says to put letters next to each other.
'debts' becomes 'IOUs' (promises to pay debts).
'actor' is an anagram of 'atroc'.
'atroc'+'ious'='ATROCIOUS'
(Other definitions for atrocious that I've seen before include "Appalling" , "Horrifying" , "Shocking" , "Awful" , "Appallingly bad" .)