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dumb

DUM/dʌm/

Verbdumbs, dumbing, dumbed

12 meanings of dumb

Practice

  1. 1
    adjectivecolloquial
    Stupid, or showing a lack of sense; also silly and pointless.

    Calling her plan dumb only made the meeting tenser.

    It was a dumb mistake that ended up costing them the game.

    Similarstupid, silly, foolish, idiotic, dim

    Oppositesmart, clever, intelligent, bright

    Note

    Now the everyday meaning, and its sharpest edge is reserved for people.

  2. 2
    verbtransitive
    To reduce the intellectual demands of something; make it simpler than it was.

    The studio dumbed down the script to appeal to a wider audience.

    Publishers often dumb down complex topics for general readers.

    UsageMostly dumb down: dumb down a script, dumb it down.

    Similarsimplify, oversimplify

    Oppositecomplicate

    Note

    It is usually voiced as a complaint about schools, broadcasters or publishers. Where the sense of making someone stupid acts on a mind, this one acts on material: a test, a script, a curriculum.

    Critics said the network had dumbed the evening news down.

    The teachers refused to dumb down the curriculum.

  3. 3
    unable to speakadjectiveoffensivedated
    Lacking the physical ability to talk or produce spoken words.

    Born deaf and dumb, she relied on a system of hand signs.

    We are dumb and we would talk
    1884, “Mighty maiden with a mission”, in W. S. Gilbert (lyrics)

    UsageFor a person who cannot speak, say unable to speak. Struck dumb or dumb with shock is still everyday English.

    Similarmute

    Note

    This is the oldest meaning, straight from Old English dumb, "silent, speechless."

    Checked 1 Nov 2026 · 2 facts

  4. 4
    no computingadjective
    Of a device: lacking the computing power, connected features, or other functions found in comparable ones.

    The network connects dozens of dumb terminals to a single mainframe.

    After the app kept crashing, we replaced our smart thermostat with a dumb one that just has a dial.

    UsageThe opposite of smart: a dumb terminal, a dumb thermostat. It carries no insult.

    Oppositesmart

    Note

    A technologist's word, defined against its opposite, smart. It describes a design choice, not a failure: a dumb terminal works perfectly well and simply leaves the thinking to the machine it is connected to.

    Checked 1 Nov 2026 · 2 facts

    • Technical terminology distinguishes dumb terminals from smart terminals. support.bull.com
    • A dumb terminal's reliance on another computer for processing is its intended architecture, rather than evidence of malfunction. ibm.com
  5. 5
    make stupidverbtransitive
    To make stupid; cause to become less intelligent.

    Some parents worry that endless scrolling will dumb their children down.

    The propaganda was designed to dumb down the population over a generation.

    UsageMostly dumb someone down; without down it sounds stiff.

    Similardull, stupefy

    Oppositesharpen, enlighten

    Note

    Angela Calabrese Barton's Teaching Science for Social Justice (2003) records "she's dumbing us down, so we won't be smarter than her."

    Checked 1 Nov 2026 · 2 facts

Practice

Can you tell the meanings of dumb apart? Answer 3 quick questions from this page, or write your own sentence and AI will check it.

Origins

Meanings 1, 3–4, 6, 9, 12

From Middle English and Old English 'dumb', meaning silent, mute, or unable to speak, going back to Proto-Germanic *dumbaz ('dull, dumb') and a Proto-Indo-European root. The senses of 'stupid' and 'pointless', regular only since the 19th century, probably developed under the influence of German 'dumm' and Dutch 'dom', which also originally meant 'lacking the power of speech'. It is cognate with Dutch 'dom', German 'dumm', and Swedish 'dum'.

Checked 30 Oct 2026 · 7 facts

  • English dumb descends through Middle English dumb from Old English dumb, meaning silent, mute, or unable to speak. en.wiktionary.org
  • The word goes back to Proto-Germanic *dumbaz, glossed as dull or dumb. en.wiktionary.org
  • The word ultimately derives from a reconstructed Proto-Indo-European root. en.wiktionary.org
  • The stupid and pointless senses occur regularly only from the nineteenth century. en.wiktionary.org
  • These senses probably developed under German dumm and Dutch dom influence. tile.loc.gov
  • German dumm and Dutch dom originally also meant lacking the power of speech. en.wiktionary.org
  • English dumb is cognate with Dutch dom, German dumm, and Swedish dum. en.wiktionary.org
Meanings 2, 5, 8, 11

From Middle English 'dumben', from Old English *dumbian (seen in the compound 'ādumbian', 'to become mute, keep silence'), from Proto-Germanic *dumbijaną, *dumbōną ('to be silent, become dumb'), and ultimately a Proto-Indo-European root. It is cognate with German 'verdummen'.

Checked 30 Oct 2026 · 5 facts

  • The verb comes from Middle English dumben, from reconstructed Old English *dumbian. en.wiktionary.org
  • Old English *dumbian occurs in ādumbian, meaning to become mute or keep silence. en.wiktionary.org
  • The reconstructed Proto-Germanic antecedents are *dumbijaną and *dumbōną, meaning to be silent or become dumb. en.wiktionary.org
  • The word ultimately derives from a Proto-Indo-European root. en.wiktionary.org
  • The verb is cognate with German verdummen. en.wiktionary.org
Meanings 7, 10

A minced oath of 'damn', that is, a softened substitute for that swear word.

Checked 30 Oct 2026 · 2 facts