The Collaborative International Dictionary of English v.0.48:

Incline \In*cline"\, v. i. [imp. & p. p. Inclined; p. pr. &
   vb. n. Inclining.] [OE. inclinen, enclinen, OF. encliner,
   incliner, F. incliner, L. inclinare; pref. in- in + clinare
   to bend, incline; akin to E. lean. See Lean to incline.]
   [1913 Webster]
   1. To deviate from a line, direction, or course, toward an
      object; to lean; to tend; as, converging lines incline
      toward each other; a road inclines to the north or south.
      [1913 Webster]

   2. Fig.: To lean or tend, in an intellectual or moral sense;
      to favor an opinion, a course of conduct, or a person; to
      have a propensity or inclination; to be disposed.
      [1913 Webster]

            Their hearts inclined to follow Abimelech. --Judges
                                                  ix. 3.
      [1913 Webster]

            Power finds its balance, giddy motions cease
            In both the scales, and each inclines to peace.
                                                  --Parnell.
      [1913 Webster]

   3. To bow; to incline the head. --Chaucer.

   Syn: To lean; slope; slant; tend; bend.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Inclined \In*clined"\, p. p. & a.
   1. Having a leaning or tendency towards, or away from, a
      thing; disposed or moved by wish, desire, or judgment; as,
      a man inclined to virtue. "Each pensively inclined."
      --Cowper.
      [1913 Webster]

   2. (Math.) Making an angle with some line or plane; -- said
      of a line or plane.
      [1913 Webster]

   3. (Bot.) Bent out of a perpendicular position, or into a
      curve with the convex side uppermost.
      [1913 Webster]

   Inclined plane. (Mech.)
      (a) A plane that makes an oblique angle with the plane of
          the horizon; a sloping plane. When used to produce
          pressure, or as a means of moving bodies, it is one of
          the mechanical powers, so called.
      (b) (Railroad & Canal) An inclined portion of track, on
          which trains or boats are raised or lowered from one
          level to another.
          [1913 Webster]

WordNet (r) 3.0 (2006):

inclined
    adj 1: (often followed by `to') having a preference,
           disposition, or tendency; "wasn't inclined to believe the
           excuse"; "inclined to be moody" [ant: disinclined]
    2: at an angle to the horizontal or vertical position; "an
       inclined plane" [ant: horizontal, perpendicular,
       vertical]
    3: having made preparations; "prepared to take risks" [syn:
       disposed(p), fain, inclined(p), prepared]

Moby Thesaurus II by Grady Ward, 1.0:

127 Moby Thesaurus words for "inclined":
   aching for, acquiescent, actuated, agreeable, alacritous, amenable,
   animated, apt, apt to, ardent, aslant, aslope, atilt, bearing,
   bending, bent, bent on, bevel, beveled, bias, biased,
   calculated to, canting, careening, compliant, conducive to,
   consenting, content, cooperative, crazy to, declivate, declivitous,
   desirous of, disposed, disposed to, dispositioned, docile,
   dying for, dying to, eager, enthusiastic, fain, fain of, favorable,
   favorably disposed, favorably inclined, fond of, forward, game,
   given, given to, impelled, in the mind, in the mood, inclinational,
   inclinatory, inclined to, inclined toward, inclining,
   inclining toward, inner-directed, itching for, keen, keen on,
   leading to, leaning, leaning toward, liable, liable to, likely,
   likely to, listing, mad on, minded, minded to, motivated, moved,
   oblique, other-directed, out of plumb, out of square, partial to,
   pitched, pliant, predisposed, predisposed to, prompt, prompted,
   prone, prone to, quick, raking, ready, ready and willing, ready to,
   receptive, recumbent, responsive, set on, shelving, shelvy,
   sideling, sidelong, slant, slanted, slanting, slantways, slantwise,
   sloped, sloping, spoiling for, stimulated, tending, tending to,
   tilted, tilting, tipped, tipping, tipsy, tractable, well-disposed,
   well-inclined, wild to, willed, willing, willinghearted, zealous