Why was "dumb" used twice? Is it for the emphasis?
"Dumb dumb" (or dumb-dumb) is slang for someone who is silly or dumb. Synonyms include "dummy" and "idiot," but "dumb dumb" is a little more childish than these two words. Ex: My brother is a dumb dumb. He ate my cookie. Ex: Don't be a dumb dumb, one plus one does not equal three.
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