futile
adjective
incapable of producing any result; ineffective; useless; not successful.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
When Ossian hears the traditions of inferior bards, he exclaims,— "I straightway seize the unfutile tales, And send them down in faithful verse."
From A Week on the Concord and Merrimack Rivers by Henry David Thoreau