Dumb meaning

dŭm
Unintentional; haphazard.

Dumb luck.

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Unwilling to speak; taciturn.
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Stupid; moronic.
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Completely undirected by intelligence or foresight.

Dumb luck.

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Not expressed or articulated in sounds or words.

Dumb resentment.

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Temporarily speechless, as with shock or fear.

I was dumb with disbelief.

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To make silent or dumb.
verb
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Lacking the power of speech; mute.
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Unwilling to talk; silent.
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Not accompanied by speech.
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Temporarily speechless, as from fear.
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Producing no sound.
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Lacking some normal part, characteristic, or quality.
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Incapable of some independent functioning because not equipped with a microprocessor or computer.

A dumb computer terminal.

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Passive. Not performing any business processing. See dumb network and dumb terminal.
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Unable to speak; lacking power of speech.

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

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Silent; unaccompanied by words.

Dumb show.

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(informal, pejorative, especially of a person) Extremely stupid.

You are so dumb! You don't even know how to make toast!

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(figuratively) Pointless, foolish, lacking intellectual content or value.

This is dumb! We're driving in circles! We should have asked for directions an hour ago!

Brendan had the dumb job of moving boxes from one conveyor belt to another.

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Lacking brightness or clearness, as a colour.
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verb
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To make stupid.
verb
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To represent as stupid.
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The definition of dumb is unable to speak or someone or something that appears stupid.

An example of dumb is the voice of an animal which does not include words.

An example of dumb is what you might call a decision that was made based on the wrong assumptions.

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Not self-propelling.
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Conspicuously unintelligent; stupid.

Dumb officials; a dumb decision.

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To reduce the intellectual demands of.
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dumb down
  • To make or become less intelligent or intellectually demanding.
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Idioms and Phrasal Verbs

Origin of dumb

  • Middle English from Old English
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Middle English dumb, from Old English dumb (“silent, silent, speechless, mute, unable to speak”), from Proto-Germanic *dumbaz (“dull, dumb”), from Proto-Indo-European *dʰeubʰ- (“to whisk, smoke, darken, obscure”). Cognate with Scots dumb (“dumb, silent”), North Frisian dom, domme (“dumb, stupid”), West Frisian dom (“dumb, stupid”), Dutch dom (“dumb, stupid”), German dumm (“dumb, stupid”), Swedish dum (“stupid”), Icelandic dumbur (“dumb, mute”).
    From Wiktionary
  • From Middle English dumbien, from Old English dumbian (more commonly in compound ādumbian (“to become mute or dumb; keep silence; hold one’s peace”)), from Proto-Germanic *dumbēną, *dumbōną (“to be silent, become dumb”), from Proto-Indo-European *dʰeubʰ- (“to whisk, smoke, darken, obscure”). Cognate with German dummen (“to become dumb”).
    From Wiktionary
  • In ordinary spoken English, a phrase like "He is dumb" is interpreted as "He is stupid" rather than "He lacks the power of speech". The latter example, however, is the original sense of the word. The senses of stupid, unintellectual, and pointless developed under the influence of the German word dumm (which itself derives from Old High German tumb).
    From Wiktionary