jadedness, n.All

Jadedness (n.) passes ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠itself off as sophistication, as if refusing to delight in the world proved one's emotional maturity.