dumb

Unable to speak; lacking power of speech.

deaf, dumb, and blind

His younger brother was born dumb, and communicated with sign language.

Not talkative; taciturn or unwilling to speak.

Having no input or voice in running things.

Life was never a May-game for men; in all times the lot of the dumb-millions born to toil was defaced with manifold sufferings, injustices, heavy burdens, avoidable and unavoidable; not play at all, but hard work that made the sinews sore, and the heart sore.

Unaccompanied by words or speech, silent, wordless.

dumb show

Since you are tongue-tied and so loath to speak In dumb significants proclaim your thoughts

Not producing any sound, silent.

[…] Thro’ lands where not a leaf was dumb; ⁠But all the lavish hills would hum The murmur of a happy Pan: […]

To silence.

[…] what I would have spoke Was beastly dumbed by him.

The paralysis of the Northern conscience, the dumbing of the Northern voice, were coming to an end.

To make stupid.

I think she's dumbing us down, so we won't be smarter than her.

To represent as stupid.

Bad-mouthing Neanderthals […] is symptomatic of a need to exclude and even demonize. […] I suggest that the unproven dumbing of the Neanderthals is an example of the same cultural preconception.

To reduce the intellectual demands of.

The ensuing storm caused the department to lower the bar—amid protests that this was dumbing the test down—so that only 80 percent of urban kids would fail.

Very, extremely.

"What, you don't like your food?" Russo asks. ¶ "Are you kidding? It's dumb good."

Yo this shit is crazy how these females are making these doctors rich. My baby moms Miracle is getting surgery in a week or so. She's flying out to Colombia. That shit really baffles me as far as she's concerned, because Miracle is already dumb thick. I'm like damn ma, how big do you want your ass to be?