Definition of jejune
1
: devoid of significance or interest : dull
jejune lectures … the "literary" fiction being written in this country nowadays strikes me as so jejune, self-absorbed and lifeless that I am just about unable to read it, much less pass fair judgment on it.— Jonathan Yardley
3
: lacking nutritive value
jejune diets
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Merriam-Webster unabridged
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Time Traveler for jejune
The first known use of jejune was in 1646
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