The Collaborative International Dictionary of English v.0.48:

agitated \agitated\ adj.
   1. troubled emotionally and usually deeply. Opposite of
      unagitated. agitated parents

   Note: Narrower terms are: demoniac, demoniacal ; distraught,
         overwrought; {disturbed, jolted, shaken; feverish,
         hectic; frantic, frenetic, phrenetic, frenzied;
         psychedelic ; {rampageous, raging, frenzied ;
         {wild-eyed . Also See: discomposed, excited, impatient,
         tense, unquiet, unsteady.
         [WordNet 1.5]

   2. 1 throwing oneself from side to side.

   Syn: tossing
        [WordNet 1.5]

   3. physically disturbed or set in motion; as, the agitated
      mixture foamed and bubbled. Opposite of {unagitated and
      left alone, allowed to stand.

   Note: [Narrower terms are: churning, churned-up, roiling,
         roiled, roily, turbulent ; {stirred.]
         [WordNet 1.5 +PJC]

The Collaborative International Dictionary of English v.0.48:

Agitate \Ag"i*tate\, v. t. [imp. & p. p. Agitated; p. pr. &
   vb. n. Agitating.] [L. agitatus, p. p. of agitare to put in
   motion, fr. agere to move: cf. F. agiter. See Act,
   Agent.]
   1. To move with a violent, irregular action; as, the wind
      agitates the sea; to agitate water in a vessel. "Winds . .
      . agitate the air." --Cowper.
      [1913 Webster]

   2. To move or actuate. [R.] --Thomson.
      [1913 Webster]

   3. To stir up; to disturb or excite; to perturb; as, he was
      greatly agitated.
      [1913 Webster]

            The mind of man is agitated by various passions.
                                                  --Johnson.
      [1913 Webster]

   4. To discuss with great earnestness; to debate; as, a
      controversy hotly agitated. --Boyle.
      [1913 Webster]

   5. To revolve in the mind, or view in all its aspects; to
      contrive busily; to devise; to plot; as, politicians
      agitate desperate designs.
      [1913 Webster]

   Syn: To move; shake; excite; rouse; disturb; distract;
        revolve; discuss; debate; canvass.
        [1913 Webster]

WordNet (r) 3.0 (2006):

agitated
    adj 1: troubled emotionally and usually deeply; "agitated
           parents" [ant: unagitated]
    2: physically disturbed or set in motion; "the agitated mixture
       foamed and bubbled" [ant: unagitated]

Moby Thesaurus II by Grady Ward, 1.0:

93 Moby Thesaurus words for "agitated":
   abashed, afflicted, all shook up, all-overish, anxious,
   anxioused up, apprehensive, aroused, beset, bothered, bustling,
   cast down, chagrined, chapfallen, concerned, confused, discomfited,
   discomforted, discomposed, disconcerted, disquieted, distressed,
   disturbed, embarrassed, excited, fearful, feverish, fidgeting,
   fidgety, flurried, flustered, fluttering, fluttery, foreboding,
   fretful, fussing, fussy, hung up, ill at ease, in a pucker,
   in a quiver, in a stew, jittery, jumpy, misgiving, mortified,
   moved, nervous, nervy, on tenterhooks, out of countenance,
   overanxious, overapprehensive, perturbed, put-out, put-upon,
   quivering, quivery, rattled, restless, roused, ruffled, shaken,
   shaken up, shaking, shaky, shivering, shivery, shook up, skittery,
   solicitous, stirred up, strained, suspenseful, tense, trembling,
   trembly, tremulant, tremulous, troubled, troublous, turbulent,
   twitchy, twittery, uncomfortable, uneasy, unnerved, unpeaceful,
   unquiet, unsettled, upset, wrought up, zealous