expecting good things to happen or something to be successful; showing this feeling synonym positive 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 a little over-optimistic. opposite pessimisticExtra examples He remained strongly optimistic that an agreement could be reached. He’s very optimistic about his chances. I don’t want to exaggerate our chances, but I’m cautiously optimistic. These estimates were wildly optimistic. a generally optimistic view of the future an essentially optimistic view of human nature Derek seemed to be in an optimistic mood. I think you are being a little over-optimistic. She’s not very optimistic about the outcome of the talks.