Continually breaking law, say? (6)
I believe the answer is:
always
'continually' is the definition.
(thesaurus)
'breaking law say?' is the wordplay.
'breaking' indicates anagramming the letters.
'law'+'say'='lawsay'
'lawsay' with letters rearranged gives 'ALWAYS'.
(Other definitions for always that I've seen before include "In perpetuity" , "Evermore" , "For good" , "Every time" , "Constantly" .)