What is "naivet'e"

Naivet'e \Na`["i]ve`t['e]"\, n. [F. See Na["i]ve, and cf. Nativity.] The state or quality of being naive.

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

1. lack of sophistication or worldliness.

Syn: naivete, naiveness.