[1] : The Collaborative International Dictionary of English v.0.48

failed \failed\ adj.
   unsuccessful. opposite of successful.

   syn: failing.
        wordnet 1.5
see also:
successful 

[2] : The Collaborative International Dictionary of English v.0.48

fail \fail\ f=al v. i. imp.  p. p. failed f=ald; p.
   pr.  vb. n. failing. f. failir, fr. l. fallere, falsum,
   to deceive, akin to e. fall. see fail, and cf. fallacy,
   false, fault.
   1. to be wanting; to fall short; to be or become deficient in
      any measure or degree up to total absence; to cease to be
      furnished in the usual or expected manner, or to be
      altogether cut off from supply; to be lacking; as, streams
      fail; crops fail.
      1913 webster

            as the waters fail from the sea.      --job xiv. 11.
      1913 webster

            till lionel's issue fails, his should not reign.
                                                  --shak.
      1913 webster

   2. to be affected with want; to come short; to lack; to be
      deficient or unprovided; -- used with of.
      1913 webster

            if ever they fail of beauty, this failure is not be
            attributed to their size.             --berke.
      1913 webster

   3. to fall away; to become diminished; to decline; to decay;
      to sink.
      1913 webster

            when earnestly they seek
            such proof, conclude they then begin to fail.
                                                  --milton.
      1913 webster

   4. to deteriorate in respect to vigor, activity, resources,
      etc.; to become weaker; as, a sick man fails.
      1913 webster

   5. to perish; to die; -- used of a person. obs.
      1913 webster

            had the king in his last sickness failed. --shak.
      1913 webster

   6. to be found wanting with respect to an action or a duty to
      be performed, a result to be secured, etc.; to miss; not
      to fulfill expectation.
      1913 webster

            take heed now that ye fail not to do this. --ezra
                                                  iv. 22.
      1913 webster

            either my eyesight fails, or thou look'st pale.
                                                  --shak.
      1913 webster

   7. to come short of a result or object aimed at or desired;
      to be baffled or frusrated.
      1913 webster

            our envious foe hath failed.          --milton.
      1913 webster

   8. to err in judgment; to be mistaken.
      1913 webster

            which ofttimes may succeed, so as perhaps
            shall grieve him, if i fail not.      --milton.
      1913 webster

   9. to become unable to meet one's engagements; especially, to
      be unable to pay one's debts or discharge one's business
      obligation; to become bankrupt or insolvent; as, many
      credit unions failed in the late 1980's.
      1913 webster
see also:
failed failing fail fallacy false fault 

[3] : WordNet (r) 2.0

failed
     adj : unable to meet financial obligations; "a failing business
           venture" syn: failing
see also:
failing 

[4] : Moby Thesaurus II by Grady Ward, 1.0

28 moby thesaurus words for "failed":
   abortive, bankrupt, bootless, broke, broken, busted, destitute,
   failing, fruitless, futile, in receivership, ineffective,
   ineffectual, inefficacious, insolvent, lame, manque, miscarried,
   miscarrying, of no effect, on the rocks, ruined, stickit,
   stillborn, successless, unfortunate, unsuccessful, useless

Failed >> F Words
Failed, definition of term: Failed
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