brainiac
/ˈbreɪnɪak
/noun North American informal
An exceptionally intelligent person: she’s the original brainiac, a kid who completed high school at 14...
- Can you please tell the brainiacs and intellectuals that not everyone is a walking dictionary?
- I'll tell you what, you goddamn egghead brainiacs at NASA: I don't want a space elevator.
- Here's what the brainiacs on the editorial board of The World's Greatest Newspaper can't understand.
Origin
1950s: from the name of a supremely intelligent alien character in the Superman comic strip, from a blend of brain and maniac.
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