'Dumbness' definitions:

Definition of 'dumbness'

From: WordNet
noun
The quality of being mentally slow and limited [syn: denseness, dumbness, slow-wittedness]

Definition of 'Dumbness'

From: GCIDE
  • Dumbness \Dumb"ness\, n. The quality or state of being dumb; muteness; silence; inability to speak. [1913 Webster]

Synonyms of 'dumbness'

From: Moby Thesaurus