pessimism

/ˈpɛsɪmɪzəm/
noun
  1. A tendency to see the worst aspect of things or believe that the worst will happen.
    • Despite the team's winning streak, his pessimism remained.
    • Pessimism about the economy led many people to save more money.
    • Her pessimism made it hard for her to enjoy the party.
Antonyms
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