obnubilate in WordNet English dictionary

1. make less visible or unclear
   "The stars are obscured by the clouds"; "the big elm tree obscures our view of the valley"
   obscure  befog  becloud  obnubilate  haze over  fog  cloud  mist 
   
2. make unclear, indistinct, or blurred
   "Her remarks confused the debate"; "Their words obnubilate their intentions"
   confuse  blur  obscure  obnubilate