Quixotism

noun

1. Quixotic extravagance in notions, actions, or undertakings; pursuit of absurdly romantic enterprises; uncalled-for or useless chivalry or magnanimity.
2. That form of delusion which leads to extravagant and absurd undertakings or sacrifices in obedience to a morbidly romantic ideal of duty or honor, as illustrated by the exploits of Don Quixote in knight-errantry. See quixotic.
3. That form of delusion which leads to extravagant and absurd undertakings or sacrifices in obedience to a morbidly romantic ideal of duty or honor, as illustrated by the exploits of Don Quixote in knight-errantry.
4. Quixotry.
5. quixotic (romantic and impractical) behavior