American English

Definition of optimistic adjective from the Oxford Advanced American Dictionary



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  1. 1expecting good things to happen or something to be successful; showing this feeling synonym positive
  2. 2 optimistic (about something) She's not very optimistic about the outcome of the talks. optimistic (that…) They are cautiously optimistic that the reforms will take place. We are now taking a more optimistic view. in an optimistic mood I think you're being overly optimistic. opposite pessimistic
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adverb He spoke optimistically about better relations between the two countries.
See the Oxford Advanced Learner's Dictionary entry: optimistic