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.]

Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

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[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: Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.

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1. lacking in nutritive value; “the jejune diets of the very poor” [syn: insubstantial]
2. displaying or suggesting a lack of maturity; “adolescent insecurity”; “jejune responses to our problems”; “their behavior was juvenile”; “puerile jokes” [syn: adolescent, juvenile, puerile]
3. lacking interest or significance; “an insipid personality”; “jejune novel” [syn: insipid]

Source: WordNet ® 2.0, © 2003 Princeton University

The month is progressing, words keep coming, and imaginations are hopefully being stimulated. Hopefully this week's word will be anything but jejune.