The Collaborative International Dictionary of English v.0.48:
Jejunity \Je*ju"ni*ty\, n. The quality of being jejune; jejuneness. [1913 Webster]WordNet (r) 3.0 (2006):
jejunity n 1: the quality of being vapid and unsophisticated [syn: jejunity, jejuneness, tameness, vapidity, vapidness] 2: quality of lacking nutritive value [syn: jejunity, jejuneness]