ashamed
Definitions
Embarrassed or guilty because of one's actions, characteristics, or associations.
Reluctant or unwilling to do something due to fear of embarrassment or shame.
Examples
He felt deeply ashamed of his behavior at the party.
She was ashamed to admit that she had never read the book.
Synonyms
embarrassed mortified guilty humiliated abashed chagrined sheepish
Antonyms
proud unashamed confident shameless unabashed brazen valiant