[mass noun]lack of experience, wisdom, or judgement 幼稚;单纯 his appalling naivety in going to the press. 他过于幼稚去求助于新闻界。 ■innocence or unsophistication 天真 the charm and naivety of the early to mid fifties. 年过半百者的魅力和天真。
语源
late 17th cent.: from French naïveté, from naïf, -ive (see naive)