noun

pointlessness or uselessness.

the horror and futility of war

fruitlessness,vanity,pointlessness,uselessness,worthlessness,ineffectuality,ineffectiveness,inefficacy,failure,unproductiveness,barrenness,unprofitability,abortiveness,impotence,hollowness,emptiness,meaningless,forlornness,hopelessness,sterility,valuelessness,bootlessness