dunderhead
Americannoun
noun
Other Word Forms
Derived Forms
Etymology
Origin of dunderhead
1615–25; apparently < Dutch dunder ( kop ) numbskull ( dunder thunder + kop head) + head
Explanation
A person who's not so smart might be called a dunderhead. If you manage to start a fire while attempting to fry an egg, your mom might call you a dunderhead. Dunderhead is a more colorful way to say "dummy" or "stupid." It's derogatory, but not the meanest word for someone making a really foolish move: "You dunderhead!" tends to sound a little bit amused. You might call a goofy kid a dunderhead, or call yourself a dunderhead when you make the same silly mistake over and over again. The origin isn't certain, though the dunder part may come from the Middle Dutch word donder, or "thunder."
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.