Definition of upset adjective from the Oxford Advanced American Dictionary

     

    upset

     adjective
    adjective
    NAmE//ʌpˈsɛt//
     
     
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  1. 1[not before noun] upset (about something) upset (that…) unhappy or disappointed because of something unpleasant that has happened There's no point getting upset about it. I understand how upset you must be feeling. She was upset that he had left without saying goodbye.
  2. 2[not before noun] upset (about something) upset (that…) upset with somebody (for doing something) somewhat angry or annoyed I was quite upset with him for being late. synonyms at angry
  3. 3 an upset stomach an illness in the stomach that makes you feel sick or have diarrhea I've been home from work with an upset stomach.
  4. Thesaurusangrymad furious upset indignant irateThese words all describe people feeling and/or showing anger.angry feeling or showing anger:Please don't be angry with me. Thousands of angry demonstrators filled the square.mad [not before noun] (informal) very angry:He got mad and walked out. She's mad at me for being late.furious extremely angry:He was furious at having been taken out of the game. He was furious with her for ruining the party.upset somewhat angry or annoyed:I was quite upset with him for being late.indignant feeling or showing anger and surprise because you think that you or someone else has been treated unfairly:She was very indignant at the way she had been treated.irate very angry:irate customers an irate letterPatterns angry/mad/furious/upset/indignant about/at something angry/furious/upset with somebody (for doing something) angry/mad/furious/upset/indignant that to get angry/mad/furious/upset to make somebody angry/mad/furious
See the Oxford Advanced Learner's Dictionary entry: upset