verb

gaslight

to gaslight, to manipulate psychologically

He tried to gaslight her into thinking she was wrong.

He tried to gaslight her into thinking she was wrong.

She realised he had been gaslighting her for years.

She realized he had been gaslighting her for years.

((sb.)) to manipulate (sb.) psychologically She realized he had been gaslighting her.

((sb.)) ((into -ing)) to manipulate (sb.) into doing (sth.) He tried to gaslight her into thinking she was wrong.

Synonyms: manipulate, mislead, deceive, brainwash

From the 1938 play 'Gas Light', where a husband manipulates his wife into thinking she is insane by dimming the gas lights and denying it.

Picture the scene from the play: the gas lights dim, but someone denies it's happening, making you doubt your own eyes.

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