vapid in WordNet English dictionary

1. lacking taste or flavor or tang
   "a bland diet"; "insipid hospital food"; "flavorless supermarket tomatoes"; "vapid beer"; "vapid tea"
   bland  flat  flavorless  flavourless  insipid  savorless  savourless  vapid 
   
2. lacking significance or liveliness or spirit or zest
   "a vapid conversation"; "a vapid smile"; "a bunch of vapid schoolgirls"
   vapid