1. Expecting the best in this best of all possible worlds; "in an optimistic mood"; "optimistic plans"; "took an optimistic view".[Wordnet]
2. Expecting the best.[Wordnet]
3. Of or pertaining to optimism; tending, or conforming, to the opinion that all events are ordered for the best.[Websters]
4. Hopeful; sanguine; as, an optimistic view.[Websters]
5. Being positive, hopeful or affirmative. [Eve - graph theoretic]
6. Being upbeat or merry. [Eve - graph theoretic]
7. Being cheerful, lighthearted, blithe, cheery or jolly. [Eve - graph theoretic]
8. Being buoyant, bright or rosy. [Eve - graph theoretic]
9. Being carefree, easygoing or happy-go-lucky. [Eve - graph theoretic]
10. Being happy, joyful, gay, joyous or slaphappy.[Eve - graph theoretic]