To feel bad about something you did, or to make someone feel bad about something they did.
Feeling shamed is not a good feeling. It can make people feel sad or embarrassed.
Examples:
She shamed herself for making a mistake.
He shamed his friend for losing the game.
I shamed myself by saying the wrong thing.
The cat shamed itself by knocking over the vase.
The superhero shamed the villain for being mean.
The dog shamed its owner by chewing up the shoes.