The Collaborative International Dictionary of English v.0.48:

Bedizen \Be*diz"en\, v. t.
   To dress or adorn tawdrily or with false taste.
   [1913 Webster]

         Remnants of tapestried hangings, . . . and shreds of
         pictures with which he had bedizened his tatters. --Sir
                                                  W. Scott.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bedizen
    v 1: decorate tastelessly
    2: dress up garishly and tastelessly [syn: bedizen, dizen]

Moby Thesaurus II by Grady Ward, 1.0:

103 Moby Thesaurus words for "bedizen":
   adorn, apply paint, array, beautify, bedaub, bedeck, begild,
   besmear, blazon, brush on paint, calcimine, coat, color,
   complexion, cover, dab, dandify, daub, deck, deck out, decorate,
   deep-dye, dip, distemper, dizen, doll up, double-dye, dress,
   dress up, dye, embellish, emblazon, embroider, enamel, engild,
   enrich, face, fancy up, fast-dye, fig out, fix up, fresco, furbish,
   garnish, get up, gild, glaze, gloss, grace, grain, gussy up, hue,
   illuminate, imbue, ingrain, japan, lacquer, lay on color, ornament,
   overdress, paint, parget, pigment, prank, prank up, preen,
   prettify, pretty up, prime, primp, primp up, prink, prink up,
   rag out, redecorate, redo, refurbish, set off, set out, shade,
   shadow, shellac, slick up, slop on paint, smarten, smarten up,
   smear, spruce up, stain, stipple, tinct, tincture, tinge, tint,
   titivate, tone, trick out, trick up, trim, undercoat, varnish,
   wash, whitewash