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English definition of “disappointment”

disappointment

noun [C/U]  /ˌdɪs·əˈpɔɪnt·mənt/ us  
the unhappiness or discouragement that results when your hopes or expectations have not been satisfied, or someone or something that is not as good as you had hoped or expected: [U] Her disappointment showed on her face. [C] After two losing seasons, we felt he was a disappointment as a coach.
(Definition of disappointment from the Cambridge Academic Content Dictionary © Cambridge University Press)
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