1. a person who is impractical or unrealistic; someone who lives in a world of dreams rather than dealing with practical matters
Usage: from Yiddish; informal

Examples

• He’s such a luftmensch, always talking about grand plans but never following through.
• The artist was a complete luftmensch who couldn’t balance a checkbook.
• Her friends called her a luftmensch because she lived entirely in her imagination.
• Despite being brilliant, he was too much of a luftmensch to succeed in business.
• The professor was a lovable luftmensch who forgot to eat when absorbed in his research.
• She accused him of being a luftmensch when he quit his job to write poetry.