Remorseful (8)
'remorseful' is the definition.
(synonyms)
This is all the clue.
(Other definitions for contrite that I've seen before include "guilt-ridden" , "Sorry for something done" , "Wholly penitent" , "Penitent, feeling guilty" , "Full of remorse" .)
'remorseful' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for penitent that I've seen before include "Repentant" , "Contrite, regretful" , "Teen pint (anag.)" , "Expressing sorrow for one's sins" , "Rueful" .)
'remorseful' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ashamed that I've seen before include "He's Adam (anag.)" , "Afflicted with remorse, feeling sense of wrongdoing" , "Remorseful" , "Not proud" , "Chagrined" .)