Vulgar criminal steals set (9)
I believe the answer is:
tasteless
'vulgar' is the definition.
('tasteless' can be similar in meaning to 'vulgar')
'criminal steals set' is the wordplay.
'criminal' indicates anagramming the letters.
'steals'+'set'='stealsset'
'stealsset' is an anagram of 'TASTELESS'.
(Other definitions for tasteless that I've seen before include "Insipid - vulgar" , "Insipid - inappropriate - dull" , "Lacking in aesthetic judgement" , "Bland; offensive" , "improper" .)