From {{term|dumb||silent, mute, unable to speak}}. Cognate with the . The senses of stupid, unintellectual, and pointless were established under the influence of the German word dumm.
fa:dumb fr:dumb io:dumb hu:dumb pl:dumb ru:dumb simple:dumb fi:dumb ta:dumb te:dumb vi:dumb zh:dumb