The Collaborative International Dictionary of English v.0.48:

Spirited \Spir"it*ed\, a.
   1. Animated or possessed by a spirit. [Obs.] "So talked the
      spirited, sly snake." --Milton.
      [1913 Webster]

   2. Animated; full of life or vigor; lively; full of spirit or
      fire; as, a spirited oration; a spirited answer.
      [1913 Webster]

   Note: Spirited is much used in composition; as in
         high-spirited, low-spirited, mean-spirited, etc.
         [1913 Webster]

   Syn: Lively; vivacious; animated; ardent; active; bold;
        courageous.
        [1913 Webster] -- Spir"it*ed*ly, adv. --
        Spir"it*ed*ness, n.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Spirit \Spir"it\, v. t. [imp. & p. p. Spirited; p. pr. & vb.
   n. Spiriting.]
   1. To animate with vigor; to excite; to encourage; to
      inspirit; as, civil dissensions often spirit the ambition
      of private men; -- sometimes followed by up.
      [1913 Webster]

            Many officers and private men spirit up and assist
            those obstinate people to continue in their
            rebellion.                            --Swift.
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   2. To convey rapidly and secretly, or mysteriously, as if by
      the agency of a spirit; to kidnap; -- often with away, or
      off.
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            The ministry had him spirited away, and carried
            abroad as a dangerous person.         --Arbuthnot &
                                                  Pope.
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            I felt as if I had been spirited into some castle of
            antiquity.                            --Willis.
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   Spiriting away (Law), causing to leave; the offense of
      inducing a witness to leave a jurisdiction so as to evade
      process requiring attendance at trial.
      [1913 Webster]

WordNet (r) 3.0 (2006):

spirited
    adj 1: displaying animation, vigor, or liveliness [ant:
           spiritless]
    2: marked by lively action; "a bouncing gait"; "bouncy tunes";
       "the peppy and interesting talk"; "a spirited dance" [syn:
       bouncing, bouncy, peppy, spirited, zippy]
    3: willing to face danger [syn: game, gamy, gamey,
       gritty, mettlesome, spirited, spunky]
    4: made lively or spirited; "a meal enlivened by the music"; "a
       spirited debate" [syn: enlivened, spirited]

Moby Thesaurus II by Grady Ward, 1.0:

163 Moby Thesaurus words for "spirited":
   abandoned, active, activist, activistic, acute, afire, aggressive,
   agog, alacritous, alert, alive, all agog, animate, animated, antic,
   anxious, ardent, audacious, avid, beany, bold, bouncing, bouncy,
   brave, breathless, breezy, bright, brisk, bubbly, bulldoggish,
   buoyant, burning, bursting to, cant, capersome, chipper, coltish,
   committed, courageous, dauntless, dedicated, desirous, devoted,
   devout, dynamic, eager, earnest, ebullient, effervescent,
   energetic, enterprising, enthusiastic, exuberant, faithful,
   fearless, fervent, fervid, fiery, flaming, forceful, forcible,
   forward, frisky, frolicsome, full of beans, full of go,
   full of life, full of pep, game, gamesome, gamy, gay, go-go,
   gritty, gutsy, gutty, hearty, heated, high-spirited, hot,
   hot-blooded, impassioned, impatient, impetuous, in earnest,
   incisive, intense, intent, intent on, intrepid, keen, kinetic,
   live, lively, living, loyal, lusty, mercurial, mettlesome,
   militant, nervy, on fire, panting, passionate, peppery, peppy,
   perfervid, perky, pert, pertinacious, piquant, playful, plucky,
   poignant, prompt, pungent, quick, quicksilver, racy, raring to,
   ready, ready and willing, red-blooded, red-hot, resolute, robust,
   rollicking, rollicksome, rompish, serious, sharp, sincere,
   skittish, smacking, snappy, spanking, sparkling, spiritful,
   sportive, sprightly, spry, spunky, strenuous, strong, take-charge,
   take-over, tenacious, tough, trenchant, valiant, vehement, vibrant,
   vigorous, vital, vivacious, vivid, warm, white-hot, zealous,
   zestful, zesty, zingy, zippy