The Collaborative International Dictionary of English v.0.48:

Depend \De*pend"\, v. i. [imp. & p. p. Depended; p. pr. & vb.
   n. Depending.] [F. d['e]pendre, fr. L. depend?re; de- +
   pend?re to hang. See Pendant.]
   1. To hang down; to be sustained by being fastened or
      attached to something above.
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            And ever-living lamps depend in rows. --Pope.
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   2. To hang in suspense; to be pending; to be undetermined or
      undecided; as, a cause depending in court.
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            You will not think it unnatural that those who have
            an object depending, which strongly engages their
            hopes and fears, should be somewhat inclined to
            superstition.                         --Burke.
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   3. To rely for support; to be conditioned or contingent; to
      be connected with anything, as a cause of existence, or as
      a necessary condition; -- followed by on or upon, formerly
      by of.
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            The truth of God's word dependeth not of the truth
            of the congregation.                  --Tyndale.
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            The conclusion . . . that our happiness depends
            little on political institutions, and much on the
            temper and regulation of our own minds. --Macaulay.
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            Heaven forming each on other to depend. --Pope.
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   4. To trust; to rest with confidence; to rely; to confide; to
      be certain; -- with on or upon; as, we depend on the word
      or assurance of our friends; we depend on the mail at the
      usual hour.
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            But if you 're rough, and use him like a dog,
            Depend upon it -- he 'll remain incog. --Addison.
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   5. To serve; to attend; to act as a dependent or retainer.
      [Obs.] --Shak.
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   6. To impend. [Obs.] --Shak.
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WordNet (r) 3.0 (2006):

depend
    v 1: be contingent upon (something that is elided); "That
         depends"
    2: have faith or confidence in; "you can count on me to help you
       any time"; "Look to your friends for support"; "You can bet
       on that!"; "Depend on your family in times of crisis" [syn:
       count, bet, depend, look, calculate, reckon]

Moby Thesaurus II by Grady Ward, 1.0:

59 Moby Thesaurus words for "depend":
   all depend, bag, bank, bank on, base, be based on,
   be contingent on, be dependent on, be predicated on, bottom, build,
   cascade, count on, daggle, dangle, depend on, drabble, drag,
   draggle, drape, droop, fall, flap, flop, flow, found, ground, hang,
   hang down, hang in suspense, hang on, hinge, hinge on, lean,
   lie on, lie with, lop, nod, pend, reckon on, rely on, rest,
   rest on, rest with, revolve on, sag, sling, stand, stand on, stay,
   suspend, swag, swing, trail, trust in, turn, turn on, turn upon,
   weep