tongueless in WordNet English dictionary

1. expressed without speech
   "a mute appeal"; "a silent curse"; "best grief is tongueless"- Emily Dickinson; "the words stopped at her lips unsounded"; "unspoken grief"; "choking exasperation and wordless shame"- Thomas Wolfe
   mute  tongueless  unspoken  wordless 
   
2. lacking a tongue
   "tongueless moccasins"
   tongueless