Quixotism /(kwĭks"ŏt*ĭz'm)/

Quix·ot·ism

Quixotism

n.
  1. 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.