jejuneness

noun

1. (uncountable)The state or condition of being jejune.

   “I do not suffer any more from brain fag. If I feel symptoms of a return of mental vacuity, I take of the hypophosphites and the intellectual jejuneness is immediately suppressed. My only objection to it is, that it creates in me an inordinate, and unseemly rambunctiousness. For a three scorer, who is now little more than a parchmental reminiscence, this is unbefitting.”