brainiac
Americannoun
noun
Etymology
Origin of brainiac
From Brainiac, a superintelligent, villainous alien in the Superman comics, probably brain + (man)iac
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Who knows what might have happened if an ordinary pol like Harding, rather than the zealous brainiac Hoover, had been president in 1929.
From The Wall Street Journal ● Jun. 17, 2026
Lawrence, the brainiac who masterminded Gilead, has designed New Bethlehem, a supposed safe haven for anyone who escaped his country’s oppression to return and live out a Mayberry-like existence.
From Los Angeles Times ● Jun. 2, 2025
OK brainiac, but how do you know the right way to prepare this photon to get it to carry as much information as possible about the thing you want to measure?
From Salon ● Jan. 30, 2024
Saying the NFL is America’s most popular sport isn’t exactly brainiac territory.
From Seattle Times ● Jul. 23, 2021
Our very own brainiac, Luke, just sat there watching us laugh.
From "Because of Mr. Terupt" by Rob Buyea
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
