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optimism

 
/ˈɑp·təˌmɪz·əm/ n [U]

Definition

the tendency to be hopeful and to emphasize or think of the good part in a situation rather than the bad part, or the feeling that in the future good things are more likely to happen than bad things: There was a note of optimism in his voice as he spoke about his recovery. optimist
 
/ˈɑp·tə·mɪst/ n [C]
She was an optimist in the face of adversity.
optimistic
 
/ˌɑp·təˈmɪs·tɪk/ adj
I’m optimistic that they can work things out.
optimistically
 
/ˌɑp·təˈmɪs·tɪ·kli/ adv
White optimistically predicted success.
(Definition of optimism n from the Cambridge Academic Content Dictionary © Cambridge University Press)

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