dumbness

From Middle English dombenesse, from Old English dumbnes; equivalent to dumb +‎ -ness.

dumbness (usually uncountable, plural dumbnesses)

1. The state of being dumb or mute: that is, of not communicating vocally, whether from selective mutism (refusal to speak) or from an inability to speak.
   • 1944, Emily Carr, The House of All Sorts, "Sissy's Job,"

     He was a deaf-mute. His dumbness did not seem to matter when we were boys.

2. Muteness, silence; abstention from speech.
   • 1611 Shakespeare, William [first known show: 15 May 1611; posthumous publication: 1623], Winter's Tale, Act 5, Scene 2:

     There was speech in their dumbness.

3. Show or gesture without words; pantomime; dumb-show.
   • 1623 Shakespeare, William [posthumous publication], Timon of Athens, Act 1, Scene 1:

     To the dumbness of the gesture one might interpret.

4. (informal) The quality of being stupid or foolish.

• dumb
• dumb-show