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®

meretriciously
     adv : in a meretricious manner; "the boat is meretriciously
           decorated" [syn: {flashily}]