Dog let out going around (7)
I believe the answer is:
current
'going around' is the definition.
(thesaurus)
'dog let out' is the wordplay.
'dog' becomes 'cur' (both can mean a despicable person).
'let out' becomes 'rent' (I've seen this in another clue).
'cur'+'rent'='CURRENT'
(Other definitions for current that I've seen before include "moving mass" , "In vogue" , "Stream - in the news" , "Contemporary" , "Flow of air or water" .)