The Collaborative International Dictionary of English v.0.48:

Aggravate \Ag"gra*vate\, v. t. [imp. & p. p. Aggravated; p.
   pr. & vb. n. Aggravating.] [L. aggravatus, p. p. of
   aggravare. See Aggrieve.]
   1. To make heavy or heavier; to add to; to increase. [Obs.]
      "To aggravate thy store." --Shak.
      [1913 Webster]

   2. To make worse, or more severe; to render less tolerable or
      less excusable; to make more offensive; to enhance; to
      intensify. "To aggravate my woes." --Pope.
      [1913 Webster]

            To aggravate the horrors of the scene. --Prescott.
      [1913 Webster]

            The defense made by the prisoner's counsel did
            rather aggravate than extenuate his crime.
                                                  --Addison.
      [1913 Webster]

   3. To give coloring to in description; to exaggerate; as, to
      aggravate circumstances. --Paley.
      [1913 Webster]

   4. To exasperate; to provoke; to irritate. [Colloq.]
      [1913 Webster]

            If both were to aggravate her parents, as my brother
            and sister do mine.                   --Richardson
                                                  (Clarissa).
      [1913 Webster]

   Syn: To heighten; intensify; increase; magnify; exaggerate;
        provoke; irritate; exasperate.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

aggravated \aggravated\ adj.
   1. 1 made more severe or intense, especially in law; as,
      aggravated assault.

   Syn: intensified.
        [WordNet 1.5]

   2. 1 incited, especially deliberately, to anger. aggravated
      by passive resistance

   Syn: provoked.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

aggravated
    adj 1: made more severe or intense especially in law;
           "aggravated assault"
    2: incited, especially deliberately, to anger; "aggravated by
       passive resistance"; "the provoked animal attacked the child"
       [syn: aggravated, provoked]

Moby Thesaurus II by Grady Ward, 1.0:

78 Moby Thesaurus words for "aggravated":
   amplified, angry, annoyed, augmented, bothered, broken,
   browned-off, bugged, burned, burnt-up, burst, busted, chafed,
   checked, chipped, cracked, crazed, cut, damaged,
   deliberately provoked, deteriorated, disturbed, embittered,
   enhanced, enlarged, exacerbated, exasperated, galled, griped,
   harmed, heated up, heightened, hotted up, huffy, hurt, impaired,
   imperfect, in bits, in pieces, in shards, increased, injured,
   intensified, irked, irritated, lacerated, magnified, mangled,
   miffed, mutilated, nettled, peeved, piqued, provoked, put-out,
   rent, resentful, riled, roiled, ruffled, ruptured, scalded,
   scorched, shattered, slashed, slit, smashed, soured, split, sprung,
   the worse for, torn, troubled, vexed, weakened, worse, worse off,
   worsened