Micawberish is a word that refers to being overly optimistic or blindly hopeful about one's future prospects, despite having little reason to believe that they will come to pass. Synonyms for Micawberish include Pollyannaish, naive, idealistic, unrealistic, and overconfident. Pollyannaish refers to someone who is excessively cheerful and optimistic, even in the face of adversity. Naive refers to being innocent or lacking in worldly experience, while idealistic refers to someone who holds high moral or ethical principles. Unrealistic and overconfident both refer to a kind of blind optimism that ignores the potential obstacles or challenges that may lie ahead. All of these synonyms can be used interchangeably with Micawberish depending on the context.