a‧shamed S3 [not before noun]
feeling embarrassed and guilty because of something you have done
I felt ashamed of the things I'd said to him.
be ashamed to do something
I'm ashamed to admit that I've never read any of his books.
I'm ashamed that I haven't replied to your letter yet.
Anna felt thoroughly ashamed when she realized what she'd said.
Everyone cries sometimes - it's nothing to be ashamed of.
be/feel ashamed of yourself
You should be ashamed of yourself.