Gaslighting

Gaslighting is a colloquialism, loosely defined as manipulating someone into questioning their own perception of reality. The expression, which derives from the title of the 1944 film Gaslight, became popular in the mid-2010s. Merriam Webster cites deception of one's memory, perception of reality, or mental stability. In a 2022 Washington Post report, it was described as a "trendy buzzword" frequently used to describe ordinary disagreements, rather than those situations that align with the word's historical definition.

This article is about human behavior. For illumination derived from burning gas, see Gas lighting.

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