Synonyms for Meretriciousness (same or very similar meaning)
WordNet sense 1 (an appearance of truth that is false or deceptive; seeming plausibility):
speciousnessWordNet sense 2 (tasteless showiness):
brashness, flashiness, garishness, gaudiness, glitz, loudness, tawdrinessFrom the ODE community, based on WordNetadd/edit