1) Absolutely useless 2) Completely ineffective 3) Doomed to fail 4) Frivolous 5) French word used in English 6) Ineffective 7) Ineffectual 8) Otiose 9) Pointless 10) Producing no result or effect 11) Serving no good purpose 12) To no avail 13) Trifling 14) Unavailing 15) Unimportant 16) Unproductive of success 1) Aimless 2) Bootless 3) Empty 4) Fruitless 5) Hopeless 6) Ineffective 7) Ineffectual 8) Nouse 9) Nugatory 10) Of no use 11) Otiose 12) Pointless 13) Unavailing 14) Unproductive 15) Unsuccessful 16) Useless 17) Vain 
• (v. t.) Talkative; loquacious; tattling. • (v. t.) Of no importance; answering no useful end; useless; vain; worthless.
Fu'tile adjective [ Latin futilis that easily pours out, that easily lets loose, vain, worthless, from the root of fundere to pour out: confer French futile . See Fuse , transitive verb ] 1. Talkative; loquacious; tattling. [ Obsolete]
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[adj] - producing no result or effect
ineffectual adjective producing no result or effect; `a futile effort`; `the therapy was ineffectual`; `an otiose undertaking`; `an unavailing attempt`
incapable of producing any result; ineffective; useless; not successful: Attempting to force-feed the sick horse was futile. · trifling; frivolous; unimportant.
[SAT terms] producing no result or effect producing no result or effect