Meaning of the word quixotic in English

What does quixotic mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

quixotic

US /kwɪkˈsɑː.t̬ɪk/
UK /kwɪkˈsɒt.ɪk/

Adjective

exceedingly idealistic; unrealistic and impractical

Example:
His quixotic quest to save the world from plastic pollution was admirable but ultimately futile.
She had a quixotic belief that she could change the entire system by herself.