verb, -set, -set⋅ting, noun, adjective | 1. | to overturn: to upset a pitcher of milk. |
| 2. | to disturb mentally or emotionally; perturb: The incident upset her. |
| 3. | to disturb or derange completely; put out of order; throw into disorder: to upset a system; to upset a mechanism; to upset an apartment. |
| 4. | to disturb physically: It upset his stomach. |
| 5. | to defeat or overthrow an opponent that is considered more formidable, as in war, politics, or sports. |
| 6. | Metalworking. to thicken the end of (a piece of heated metal) by hammering on the end against the length of the piece. |
| 7. | to become upset or overturned. |
| 8. | an upsetting or instance of being upset; overturn; overthrow. |
| 9. | the defeat of a person, team, etc., that is considered more formidable. |
| 10. | a nervous, irritable state of mind. |
| 11. | a disordered or confused arrangement. |
| 12. | Metalworking.
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| 13. | overturned: an upset milk pail. |
| 14. | disordered; disorganized: The house is upset. |
| 15. | distressed; disturbed: She had an upset stomach. He is emotionally upset. |
| 16. | Archaic. raised up. |