jejune (ji-JOON) - adj., lacking nutritional value; devoid of significance or interest, insipid; uninformed, naive, puerile, childish.
A diet, a novel, and behavior can all be jejune. Senses are given in the order of development -- the current primary sense has been the second for a couple centuries, but this is giving way to the third. The root is Latin jējūnus, fasting/hungry plus the first two meanings by extension -- which is also the root (with the prefix dis-) of dinner, the meal by which one breaks one's fast.
---L.
A diet, a novel, and behavior can all be jejune. Senses are given in the order of development -- the current primary sense has been the second for a couple centuries, but this is giving way to the third. The root is Latin jējūnus, fasting/hungry plus the first two meanings by extension -- which is also the root (with the prefix dis-) of dinner, the meal by which one breaks one's fast.
---L.