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
2 : temporarily incapable of speaking; "struck dumb"; "speechless with shock"
3 : unable to speak because of hereditary deafness
