Disgraced (6)
'disgraced' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for shamed that I've seen before include "Disgraced or humiliated" , "Made to feel guilty and inferior" , "He's mad (anag)" , "Dishonoured, disgraced" , "Abashed" .)
(Other definitions for in the doghouse that I've seen before include "In disgrace" , "Out of favour, domestically" , "Under a cloud" , "Seriously out of favour" .)