Na["i]vet[e]

Naivet'e \Na`["i]ve`t['e]"\, n. [F. See {Na["i]ve}, and cf.
   {Nativity}.]
   1. The state or quality of being naive; lack of
      sophistication or worldliness.

   Syn: naivete, naiveness.
        [1913 Webster + WordNet 1.5 + PJC]

              A story which pleases me by its na["i]vet['e] --
              that is, by its unconscious ingenuousness. --De
                                                  Quincey.
        [1913 Webster]

   2. An act displaying naivete; a naive remark or action.
      [PJC] naivety
    

40 Moby Thesaurus words for "naivete":
      artlessness, bluffness, bluntness, candor, childlikeness,
      cullibility, deceivability, directness, dupability, easiness,
      greenness, guilelessness, gullibility, hoaxability, ingenuousness,
      innocence, naiveness, naivety, openheartedness, openness,
      outspokenness, persuadability, plainness, seduceability,
      simpleheartedness, simplemindedness, simpleness, simplicity,
      sincerity, single-heartedness, single-mindedness,
      singleness of heart, softness, trustfulness, unguardedness,
      unsophisticatedness, unsophistication, unsuspiciousness,
      unwariness, weakness