n.
幼稚, 空洞

Jejune \Je*june"\, a. [L. jejunus fasting, hungry, dry, barren,
scanty; of unknown origin.]
1. Lacking matter; empty; void of substance.

2. Void of interest; barren; meager; dry; as, a jejune
narrative.

3. Juvenile; childish; immature.
[PJC]

4. Lacking nutritional value.
[PJC] - {Je*june"ly}, adv. -- {Je*june"ness}, n. --Bacon.