Source : Webster's Revised Unabridged Dictionary (1913)

Tongueless \Tongue"less\, a.
   1. Having no tongue.

   2. Hence, speechless; mute. ``What tongueless blocks were
      they! would they not speak?'' --Shak.

   3. Unnamed; not spoken of. [Obs.]

            One good deed dying tongueless.       --Shak.

Source : WordNet®

tongueless
     adj 1: lacking a tongue; "tongueless moccasins" [ant: {tongued}]
     2: lacking power of speech [syn: {mute}]
     3: expressed without speech; especially because words would be
        inappropriate or inadequate; "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
        [syn: {mute}, {unspoken}, {wordless}]