adjective
anticipating only the best to happen and minimizing all other possibilities
was optimistic about book sales that year
Synonyms: fond, Pollyannaish, sanguine, upbeat; compare hopeful 1
Related Word: bright, cheerful, merry, sunny; hopeful, hoping; assured, confident
Idioms: feeling on top of the world, looking on the bright side, riding ( or sitting) on cloud nine
Contrasted words: cynical; doubtful, uncertain
Antonyms: pessimistic