Futile
Futile (?; 277) , adjective
[Latin futilis that easily pours out, that easily lets loose, vain, worthless, from the root of fundere to pour out: compare French futile. See Fuse, transitive verb]
1.
Talkative; loquacious; tattling. [Obsolete]
Talkers and futile persons.
2.
Of no importance; having no useful purpose; useless; vain; worthless; pointless.
Futile theories.
His reasoning... was singularly futile.