Concurred about dog (3)
I believe the answer is:
cur
'dog' is the definition.
(both can mean a despicable person)
'concurred about' is the wordplay.
'about' says the answer is hidden in the clue (the clue goes around or about the answer).
'CUR' can be found hidden inside 'concurred'.
(Other definitions for cur that I've seen before include "Inferior dog or one of mixed breed" , "Mongrel; rascal" , "Vicious dog" , "Worthless mongrel" , "Worthless or bad-tempered dog" .)