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  1. gaslit(def 2).
verb (used with object), gas·light·ed or gas·lit, gas·light·ing.
  1. to cause (a person) to doubt his or her sanity through the use of psychological manipulation: How do you know if your partner is gaslighting you?

Origin of gaslight

1800–10; gas + light1; def 4 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
Related formsgas·light·ed, gas·lit, adjectivegas·light·ing, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for gaslight

light, flashlight, beacon, torch, searchlight, gaslight

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Contemporary Examples of gaslight

Historical Examples of gaslight

British Dictionary definitions for gaslight


  1. a type of lamp in which the illumination is produced by an incandescent mantle heated by a jet of gas
  2. the light produced by such a lamp
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012