Artful nude, terribly dishonest (10)
I believe the answer is:
fraudulent
'dishonest' is the definition.
('fraudulent' can be similar in meaning to 'dishonest')
'artful nude terribly' is the wordplay.
'terribly' indicates an anagram.
'artful'+'nude'='artfulnude'
'artfulnude' with letters rearranged gives 'FRAUDULENT'.
(Other definitions for fraudulent that I've seen before include "dishonest" , "Intended to deceive" .)