Learn how to say Dumbness correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word dumb:
1(of a person) unable to speak, most typically because of congenital deafness:
he was born deaf, dumb, and blind
(of animals) unable to speak as a natural state and thus regarded as helpless or deserving pity.
[predic.] temporarily unable or unwilling to speak:
she stood dumb while he poured out a stream of abuse
[attributive] resulting in or expressed by speechlessness:
they stared in dumb amazement
2 informal, chiefly North American stupid:
a dumb question
3(of a computer terminal) able only to transmit data to or receive data from a computer; having no independent processing capability. Often contrasted with intelligent.
1 (dumb something down) informal simplify or reduce the intellectual content of something so as to make it accessible to a larger number of people:
the producers categorically deny that they’re dumbing down the show
[no object] (dumb down) become less intellectually challenging:
the need to dumb down for mass audiences
2 literary make dumb or unheard; silence:
a splendour that dazed the mind and dumbed the tongue