To feel overwhelmed is to feel like you have too much to do or too many things to think about.
Feeling overwhelmed can make people feel stressed, anxious, or like they can't handle everything.
Examples:
She felt overwhelmed by all the work she had to do.
I was overwhelmed by all the presents at my birthday party.
The students were overwhelmed by the difficult test.
The little boy looked overwhelmed by all the big kids.
I felt overwhelmed by the huge mountain of toys in my room.
The puppy looked overwhelmed by all the new people in the house.