insipid 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 interest or significance or impact
   "an insipid personality"; "jejune novel"
   insipid  jejune