mope
verbUK /məʊp/
US /moʊp/
To feel sad and do nothing much.
After his friend moved away, he moped around the house all weekend.
OTHER MEANINGS
2. To move slowly and without energy because you feel unhappy.
She moped from room to room, sighing loudly.
3. A person who is sad and does not join in with others.
Don't be such a mope—come and play with us!
4. To spend time thinking about your problems instead of doing something.
He moped about the lost game for days.