3 Verbs to Use for the Word fruitlessness

On reaching the bright and gay scene of the piazza, which contrasted with the gloomy court he had just quitted like morning with night, he saw the utter fruitlessness of further pursuit.

The motion was defeated by an enormous majority, a general election was close at hand, and feeling the fruitlessness of further struggle Grattan, as already stated, refused to offer himself for re-election, and retired despairingly from the scene.

I know the fruitlessness, the utter despair, that awaits such a sentiment.

3 Verbs to Use for the Word  fruitlessness