jejune

adj

1. (archaic, dated)Not nutritious.
2. (broadly)Lacking matter; empty; devoid of substance.
3. Naive; simplistic.

   “I have often wondered why some late Writers should sensure Tully's Letters for being too naked and jejune, when that to his Friend Lucceius, which the Reader will find in this Collection, is a plain Demonstration to the contrary?”

   “This renders the recognition of alternatives a paramount necessity for a logic of discovery, which can no longer dismiss them with a jejune chapter on 'disjunctive propositions'.”

   “He laid the brush aside and, laughing with delight, cried: -Will he come? The jejune Jesuit.”

   “Doubtless, too, both grammarians and philosophers have been aware that it is by no means easy to distinguish even questions, commands, and so on from statements by means of the few and jejune grammatical marks available, such as word order, mood, and the like : though perhaps it has not been usual to dwell on the difficulties which this fact obviously raises.”

   “Gradus had long been a member of all sorts of jejune leftist organizations.”