futile

Drumming up enough U.S. consumer interest in food made from waste will require a pitch that goes beyond the increasingly futile message "this is better for the planet."

Add to that the fact that saving for retirement is, in the U.S., a lot of work, and the whole thing seems like a futile exercise.

Two deputies and a jail nurse entered her cell and began resuscitation efforts, but it was futile.

Trump’s attempts to distance himself from Hinchcliffe’s comments seem futile given the entire rally at MSG was filled with xenophobic bigotry and offensive humor.

But the attempts have proven futile as the joke has reminded voters of Trump’s history of hostility towards Puerto Rico.