quixotish--prophetes.ai

quixotish, a. rare.
  (kwɪkˈsɒtɪʃ)
  [f. Quixote n. + -ish¹.]
  = quixotic a. 2 a.

1810 Shelley Let. 20 May (1964) I. 11, I act unlike every other mortal enough in all conscience, without seeking for more Quixotish adventures.

Oxford English Dictionary