to feel guilty; to feel ashamed of oneself; to be remorseful

to be ashamed to face (sb); to feel bad about having failed (sb)

ashamed

ashamed and sorry; suffering shame and remorse

sweating from shame; extremely ashamed

ashamed look

to blush in shame; red-faced

lit. I'm ashamed and dare not (accept the honor); fig. I do not deserve your praise.; You flatter me too much.

ashamed and unable to show one's face (idiom)