Full of remorse (7)
I believe the answer is:
ashamed
'full of remorse' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for ashamed that I've seen before include "Feeling embarrassed" , "Embarrassed, sheepish" , "Remorseful" , "Humiliated" , "Afflicted with remorse, feeling sense of wrongdoing" .)