›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