Source : Webster's Revised Unabridged Dictionary (1913)

Meretricious \Mer`e*tri"cious\, a. [L. meretricius, from
   meretrix, -icis, a prostitute, lit., one who earns money, i.
   e., by prostitution, fr. merere to earn, gain. See {Merit}.]
   1. Of or pertaining to prostitutes; having to do with
      harlots; lustful; as, meretricious traffic.

   2. Resembling the arts of a harlot; alluring by false show;
      gaudily and deceitfully ornamental; tawdry; as,
      meretricious dress or ornaments. -- {Mer`e*tri"cious*ly},
      adv. -- {Mer`e*tri"cious*ness}, n.

Source : WordNet®

meretriciousness
     n 1: an appearance of truth that is false or deceptive; seeming
          plausibility; "the speciousness of his argument" [syn: {speciousness}]
     2: tasteless showiness [syn: {flashiness}, {garishness}, {gaudiness},
         {loudness}, {brashness}, {tawdriness}, {glitz}]