gaslight
Americanverb (used with object)
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to cause (a person) to doubt their judgment, memory, or sanity through the use of psychological manipulation.
How do you know if your partner is gaslighting you?
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to deceive (a person or group of people) through repetition of a constructed false narrative.
The cable news networks have been gaslighting their viewers with partisan coverage of the bill.
noun
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light produced by the combustion of illuminating gas.
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a gas burner or gas jet for producing light through the process of combustion.
adjective
noun
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a type of lamp in which the illumination is produced by an incandescent mantle heated by a jet of gas
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the light produced by such a lamp
Usage
What does gaslighting mean? Gaslighting is a form of emotional abuse or psychological manipulation involving distorting the truth in order to confuse or create doubt in another person to the point they question their sanity or reality.
Other Word Forms
- gaslighted adjective
- gaslighting noun
- gaslit adjective
Etymology
Origin of gaslight
First recorded in 1800–10; gas ( def. ) + light 1 ( def. ); gaslight def. 1 in reference to the 1944 movie Gaslight, in which an abusive husband secretly and repeatedly dims and brightens the gaslights in the house while accusing his wife of imagining the flickering
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.
But if they are willing to gaslight you about pay, exploring other options might be smart.
From MarketWatch • Jan. 21, 2026
Some of the transgressors try to gaslight the audience in their confessionals despite what they’ve recently burned into our eyes and ears.
From Salon • Mar. 13, 2025
The petition says they should say sorry for "attempting to gaslight the public and undermining the efforts of genuine athletes."
From BBC • Aug. 15, 2024
Much of what happens is filtered through Evelyn’s perspective and it’s clear she might not be the most reliable narrator, but it’s also clear her husband may have a tendency to gaslight her.
From Seattle Times • Apr. 19, 2024
At the top of each landing there was a gaslight fixture that was no longer being used now that the building was wired for electricity.
From "Bad Boy" by Walter Dean Myers
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.
