dumbo

dumbo

[duhm-boh] Slang.
noun, plural dumbos.
1.
a stupid person: a class full of dumbos.
adjective
2.
stupid or foolish: What a dumbo idea!

Origin:
probably earlier than 1955–60; dumb + -o

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World English Dictionary
dumbo (ˈdʌmbəʊ)
 
n , pl -bos
slang a slow-witted unintelligent person
 
[C20: after the flying elephant in Dumbo, the Walt Disney cartoon released in 1941]

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