white hat
Americannoun
-
a virtuous hero, especially in a cowboy movie; good guy.
-
Also called white hat hacker. Computers. a hacker who violates the security of a system with the knowledge and consent of the owner or developer in order to test the code, without malicious intent.
noun
Other Word Forms
Derived Forms
Etymology
Origin of white hat
First recorded in 1960–65 white hat for def. 1, and in 1990–95 white hat for def. 2; from the white hat often worn by the virtuous hero in a cowboy movie
Compare meaning
How does white-hat compare to similar and commonly confused words? Explore the most common comparisons:
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.
When fans invaded the pitch after the Windies defeated Australia by 17 runs, Bird's famous white hat – specially made by a firm in Luton – was taken from his head.
From BBC • Sep. 23, 2025
Wearing a gray Mater Dei T-shirt and white hat, Raul Lara is reminded constantly how strange he looks in Monarchs football gear by his acquaintances from his Long Beach Poly coaching days.
From Los Angeles Times • May 19, 2024
Not far away, Jackie Garlock, of nearby Clear Lake, was wearing a white hat indicating her status as one of Trump’s “caucus captains.”
From Seattle Times • Jan. 7, 2024
Mollie is telling Ernest that she sees him as a good guy, even if the movie has already violently upended the familiar dualism of the white hat vs. black.
From New York Times • Jan. 4, 2024
Scheibert, the beardless Prussian, moody, prim, was dressed all in white, white coat, floppy white hat, the inevitable glittering monocle.
From "The Killer Angels: The Classic Novel of the Civil War" by Michael Shaara
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.
