The Collaborative International Dictionary of English v.0.48:

Decorate \Dec"o*rate\ (d[e^]k"[-o]*r[=a]t), v. t. [imp. & p. p.
   Decorated (d[e^]k"[-o]*r[=a]`t[e^]d); p. pr. & vb. n.
   Decorating (d[e^]k"[-o]*r[=a]`t[i^]ng).] [L. decoratus, p.
   p. of decorare, fr. decus ornament; akin to decere to be
   becoming. See Decent.]
   To deck with that which is becoming, ornamental, or honorary;
   to adorn; to beautify; to embellish; as, to decorate the
   person; to decorate an edifice; to decorate a lawn with
   flowers; to decorate the mind with moral beauties; to
   decorate a hero with honors.
   [1913 Webster]

         Her fat neck was ornamented with jewels, rich bracelets
         decorated her arms.                      --Thackeray.

   Syn: To adorn; embellish; ornament; beautify; grace. See
        Adorn.
        [1913 Webster]

   Decorated style (Arch.), a name given by some writers to
      the perfected English Gothic architecture; it may be
      considered as having flourished from about a. d. 1300 to
      a. d. 1375.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

decorated \decorated\ adj.
   having decorations. [Narrower terms: beaded, beady,
   bejeweled, bejewelled, bespangled, gemmed, jeweled, jewelled,
   sequined, spangled, spangly; bedaubed; bespectacled,
   monocled, spectacled; braided; brocaded, embossed,
   raised; buttony; carbuncled; champleve, cloisonne,
   enameled; crested, plumed having a decorative plume);
   crested, top-knotted, topknotted, tufted; crested;
   embellished, ornamented, ornate; embroidered; encircled,
   ringed, wreathed; fancied up, gussied, gussied up, tricked
   out; feathery, feathered, plumy; frilled, frilly,
   ruffled; fringed; gilt-edged; inflamed; inlaid;
   inwrought; laced; mosaic, tessellated; paneled,
   wainscoted; studded; tapestried; tasseled, tasselled;
   tufted; clinquant, tinseled, tinselly; tricked-out]
   Also See: clothed, fancy. Antonym: unadorned.

   Syn: adorned.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

decorated
    adj 1: provided with something intended to increase its beauty
           or distinction [syn: adorned, decorated] [ant:
           unadorned, undecorated]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "decorated":
   adorned, beaded, bedecked, bedizened, befrilled, bejeweled,
   beribboned, bespangled, colored, decked out, embellished,
   embroidered, fancy, feathered, festooned, figurative, figured,
   florid, flowered, flowery, garnished, jeweled, lush, luxuriant,
   ornamented, ornate, overcharged, overloaded, plumed, purple,
   spangled, spangly, studded, tricked out, trimmed, wreathed