As an adjective:
* The news of her grandmother's illness left her deeply upset.
* He was upset about missing the party.
* The team was upset after losing the game.
As a verb:
* Don't let the rude comments upset you.
* The sudden change in plans upset her schedule.
* His anger upset the fragile peace in the room.
In a phrase:
* She was upset at the way he treated her.
* They were upset about the lack of communication.
* The storm upset the delicate balance of nature.
Let me know if you'd like to see more examples or have a specific context in mind!