Source : Webster's Revised Unabridged Dictionary (1913)

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. - {Je*june"ly}, adv. -- {Je*june"ness}, n.
      --Bacon.

Source : WordNet®

jejuneness
     n 1: lacking and evidencing lack of experience of life [syn: {callowness},
           {juvenility}]
     2: the quality of being vapid and unsophisticated [syn: {jejunity},
         {tameness}, {vapidity}, {vapidness}]
     3: quality of lacking nutritive value [syn: {jejunity}]