The Collaborative International Dictionary of English v.0.48:

Abscond \Ab*scond"\, v. i. [imp. & p. p. Absconded; p. pr. &
   vb. n. Absconding.] [L. abscondere to hide; ab, abs +
   condere to lay up; con + d[a^]re (only in comp.) to put. Cf.
   Do.]
   1. To hide, withdraw, or be concealed.
      [1913 Webster]

            The marmot absconds all winter.       --Ray.
      [1913 Webster]

   2. To depart clandestinely; to steal off and secrete one's
      self; -- used especially of persons who withdraw to avoid
      a legal process; as, an absconding debtor.
      [1913 Webster]

            That very homesickness which, in regular armies,
            drives so many recruits to abscond.   --Macaulay.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "absconded":
   absent, away, deleted, departed, disappeared, gone, lacking,
   missing, no longer present, nonattendant, nonexistent, not found,
   not present, omitted, out of sight, subtracted, taken away,
   vanished, wanting