don quixote

from WordNet (r) 3.0 (2006)

Don Quixote
    n 1: the hero of a romance by Cervantes; chivalrous but
         impractical
    2: any impractical idealist (after Cervantes' hero)

from Moby Thesaurus II by Grady Ward, 1.0

37 Moby Thesaurus words for "Don Quixote":
      Bayard, Gawain, Lancelot, Quixote, Ritter, Sidney, Sir Galahad,
      bachelor, banneret, baronet, caballero, cavalier, chevalier,
      companion, daydreamer, dreamer, dreamer of dreams, enthusiast,
      escapist, idealist, knight, knight bachelor, knight banneret,
      knight baronet, knight-errant, lotus-eater, prophet, rhapsodist,
      romancer, romantic, romanticist, seer, utopian, utopianist,
      utopianizer, visionary, wishful thinker