The term "gaslighting" derives from the 1944 film Gaslight, in which a husband uses trickery to convince his wife that she is mentally unwell so he can steal fr

The term "gaslighting" derives from the 1944 film Gaslight, in which a husband uses trickery to convince his wife that she is mentally unwell so he can steal from her. Gaslighting was largely an obscure or esoteric term until the mid-2010s, when it broadly seeped into English lexicon. https://en.wikipedia.org/wiki/Gaslighting https://en.wikipedia.org/wiki/Gaslighting