Extremely idealistic and unrealistic; pursuing noble but impractical goals. Quixotic behavior involves fighting for causes that are impossible to win or problems that cannot be solved.
From Don Quixote, the protagonist of Cervantes' novel who fought windmills thinking they were giants. Don Quixote was a noble-hearted knight whose idealism blinded him to reality, making him attack imaginary enemies and pursue impossible quests.
Don Quixote literally fought windmills, thinking they were evil giants - that's the perfect image for quixotic behavior. It's not just unrealistic; it's nobly, romantically unrealistic. Quixotic people are admirable dreamers who charge at problems that can't be defeated.
Complete word intelligence in one call. Free tier — 50 lookups/day.