1. pollyannaish - Adjective
2. pollyannaish - Adjective Satellite
pleasantly (even unrealistically) optimistic
Source: WordNetInvestors covet past improvements but also always believe pricing unimaginable future creativity and efficiency gains is Pollyannaish. And they're always wrong. Bet on it. Kenneth Fisher
This concern was dismissed by most Republicans as moral preening or a Pollyannaish unwillingness to recognize the distinction between private morality and realpolitik. Source: Internet
Treverton said that while he thinks “the administration has done OK,” President Donald Trump “by being so Pollyannaish about it, I think he hasn’t prepared people for what might come.” Source: Internet