quixotic
Definition
Exceedingly idealistic; unrealistic and impractical, often with noble intentions.
हिन्दी अत्यधिक आदर्शवादी; अवास्तविक और अव्यावहारिक, अक्सर उदात्त इरादों के साथ।
Example
"His quixotic quest to end world hunger won admiration but little success."