It is when a person feels regret and embarrassment over their actions.
the opposite is proud.
ashamed
Ashamed of
Proud
For proud meaning showing pride, the opposite could be humble or modest.To feel the opposite of being proud could be ashamed, mortified, or chagrined.meek, ashamed, broken, humbled
proud
To use ashamed in a sentance, you could say, I hope that you are ashamed of yourself, or, I feel very ashamed at what I did.
The prefix of ashamed is "a-".
He was ashamed of what he had done.
ashamed=honteux
Ashamed is the correct spelling.
Ashamed, broken, crushed, humbled, humiliated, low, meek, mild, modest as per the related link.