1. Based on pretence; deceptively pleasing
   "meretricious praise"; "a meretricious argument";
   - gilded, specious, glossy
    
2. Tastelessly showy
   "a meretricious yet stylish book";
   - brassy [informal], flash [informal], flashy, garish, gaudy, loud, trashy
    
3. [archaic] Like or relating to a prostitute
   "meretricious relationships"

See also: insincere, tasteless