Meaning of jejune

(adj) of insufficient quantity to meet a need; "an inadequate income"; "a poor salary"; "money is short"; "on short rations"; "food is in short supply"; "short on experience"; "the jejune diets of the very poor"

displaying or suggesting a lack of maturity; "adolescent insecurity"; "jejune responses to our problems"; "their behavior was juvenile"; "puerile jokes"

lacking interest or significance or impact; "an insipid personality"; "jejune novel"