Meaning of futility in English
futility
noun [ U ]
UKvolume_up
/fjuːˈtɪl.ə.ti/
USvolume_up
/fjuːˈtɪl.ə.t̬i/

the fact of having no effect or of achieving nothing:

"What's his latest book about?" "Oh, the usual - the transience of love and the futility of life."

People have got tired of the futility of war.