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upset  - definition and synonyms

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noun upset pronunciation in American English /ˈʌpˌset/
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singularupset
pluralupsets
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  1. 1
    [countable] an occasion when someone defeats an opponent who is considered to be better than them

    It was one of the biggest upsets of the tournament.

  2. 2
    [countable] an illness that affects your stomach, usually caused by something that you have eaten or drunk

    a stomach/tummy upset

  3. 3
    [countable/uncountable] mainly British a feeling of sadness, worry, or anger
    1. a.
      [countable] something that makes you feel sad, worried, or angry

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a type of hairstyle which has a long, thin strip of hair growing down the back of the neck

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