[1] : The Collaborative International Dictionary of English v.0.48

garish \gar"ish\ g^ar"i^sh, a. cf. oe. gauren to stare;
   of uncertain origin. cf. gairish.
   1. showy; dazzling; ostentatious; attracting or exciting
      attention. "the garish sun." "a garish flag." --shak. "in
      . . . garish colors." --asham. "the garish day." --j. h.
      newman.
      1913 webster

            garish like the laughters of drunkenness. --jer.
                                                  taylor.
      1913 webster

   2. gay to extravagance; flighty.
      1913 webster

            it makes the mind loose and garish.   --south.
      -- gar"ishly, adv. -- gar"ishness, n. --jer. taylor.
      1913 webster
see also:
gairish gar"ishly gar"ishness 

[2] : WordNet (r) 2.0

garish
     adj : tastelessly showy; "a flash car"; "a flashy ring"; "garish
           colors"; "a gaudy costume"; "loud sport shirts"; "a
           meretricious yet stylish book"; "tawdry ornaments"
           syn: brassy, cheap, flash, flashy, gaudy, gimcrack,
            loud, meretricious, tacky, tatty, tawdry, trashy
see also:
brassy cheap flash flashy gaudy gimcrack 
loud meretricious tacky tatty tawdry 
trashy 

[3] : Moby Thesaurus II by Grady Ward, 1.0

92 moby thesaurus words for "garish":
   gongoresque, johnsonian, affected, bedazzling, bedizened,
   big-sounding, blatant, blinding, brazen, brazenfaced, bright,
   bright and shining, brilliant, cheap, chintzy, colorful,
   convoluted, crude, dazzling, declamatory, effulgent, elevated,
   euphuistic, extravagant, flagrant, flamboyant, flaming, flaring,
   flash, flashy, flaunting, florid, fulgent, fulgid, fulsome, gaudy,
   glaring, glary, gorgeous, grandiloquent, grandiose, grandisonant,
   harsh, high-flowing, high-flown, high-flying, high-sounding,
   highfalutin, inkhorn, labyrinthine, lexiphanic, lofty, loud, lurid,
   magniloquent, meretricious, obtrusive, orotund, ostentatious,
   overbright, overdone, overelaborate, overinvolved, overwrought,
   pedantic, pompous, pretentious, raffish, raw, refulgent,
   resplendent, rhetorical, screaming, sensational, sensationalistic,
   sententious, shameless, showy, shrieking, sonorous, spectacular,
   splendent, splendid, splendorous, stilted, tall, tasteless, tawdry,
   tinsel, tortuous, vivid, vulgar

Garish >> G Words
Garish, definition of term: Garish
garish_pag1.html