jejune 
November 14, 2004 | 10:59

Dictionary.com/jejune:

jejune (juh-JOON) adjective

  1. Not interesting; dull: “and there pour forth jejune words and useless empty phrases” (Anthony Trollope).
  2. Lacking maturity; childish: surprised by their jejune responses to our problems.
  3. Lacking in nutrition: a jejune diet.

[From Latin iinus, meager, dry, fasting.]