Organised criminal is impressive (9)
I believe the answer is:
grandiose
'impressive' is the definition.
(similar in meaning)
'organised criminal' is the wordplay.
'criminal' is an anagram indicator.
'organised' is an anagram of 'GRANDIOSE'.
'is' is the link.
(Other definitions for grandiose that I've seen before include "Ambitious" , "affected" , "Bombastic" , "Pretentiously impressive" , "Pretentiously magnificent" .)