insubstantial, jejune -- (lacking in nutritive value; "the jejune diets of the very poor")
adolescent, jejune, juvenile, puerile -- (displaying or suggesting a lack of maturity; "adolescent insecurity"; "jejune responses to our problems"; "their behavior was juvenile"; "puerile jokes")
insipid, jejune -- (lacking interest or significance or impact; "an insipid personality"; "jejune novel")
(Sound)
