This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Having no useful result.

adj. Trifling and frivolous; idle: the futile years after her artistic peak.

adj. Incapable of producing results; useless; not successful; not worth attempting.

adj. Talkative; loquacious; tattling.

adj. Of no importance; answering no useful end; useless; vain; worthless.

Frivolous; merely loquacious.

Of no effect; answering no valuable purpose; useless; ineffective; trifling: as, futile efforts; futile prattle.

Synonyms Trivial, frivolous, unimportant, useless, bootless, unavailing, profitless, vain, idle.

adj. producing no result or effect

adj. unproductive of success

"It will cost millions in marketing and promotion, or what I call a futile attempt and waste of shareholder equity."

useless    unproductive   

effectual    effective   

futilitarian    futility   

talkative    loquacious    tattling    useless    vain    worthless    ineffectual    trivial    fruitless    idle   

brutal    butyl    tootle   

fruitless    useless    desperate    hopeless    unnecessary    ineffectual    pointless    trivial    frantic    frivolous