WordNet (r) 3.0 (2006):

kitsch
    n 1: excessively garish or sentimental art; usually considered
         in bad taste

Moby Thesaurus II by Grady Ward, 1.0:

84 Moby Thesaurus words for "kitsch":
   Babbittry, French literature, Renaissance literature,
   ancient literature, art object, bad taste, belles lettres,
   bourgeois taste, brainchild, bric-a-brac, camp, campiness, classic,
   classics, composition, contemporary literature, creation, design,
   erotic literature, erotica, folk literature, grotesque, high camp,
   humane letters, impropriety, inappropriateness, indecency,
   indecorousness, indecorum, indelicacy, inelegance, inelegancy,
   letters, literature, low camp, master, masterpiece, masterwork,
   medieval literature, mobile, museum piece, national literature,
   nude, obscene literature, old master, pasticcio, pastiche,
   philistinism, piece, piece of virtu, polite literature, poor taste,
   pop, pop culture, pop literature, popular literature,
   pornographic literature, pornography, pseudonymous literature,
   republic of letters, scatological literature, serious literature,
   stabile, statue, still life, study, tastelessness,
   travel literature, unaestheticism, unaestheticness, unbecomingness,
   underground literature, unfittingness, unseemliness, unsuitability,
   unsuitableness, virtu, vulgar taste, vulgarism, vulgarity,
   vulgarness, wisdom literature, work, work of art