Plenty breaking the law (6)
I believe the answer is:
wealth
'plenty' is the definition.
(thesaurus)
'breaking the law' is the wordplay.
'breaking' is an anagram indicator.
'the'+'law'='thelaw'
'thelaw' anagrammed gives 'WEALTH'.
(Other definitions for wealth that I've seen before include "Material worth" , "Assets" , "capital" , "State of luxury" , "Mammon" .)