Synonyms of futile

Adjective

1. futile, ineffectual, otiose, unavailing, useless (vs. useful)

usage: producing no result or effect; "a futile effort"; "the therapy was ineffectual"; "an otiose undertaking"; "an unavailing attempt"

2. bootless, fruitless, futile, sleeveless, vain, unproductive (vs. productive)

usage: unproductive of success; "a fruitless search"; "futile years after her artistic peak"; "a sleeveless errand"; "a vain attempt"

Definition and meaning of futile (Dictionary)