0 the action of tricking or controlling someone by making them believe things that are not true, especially by suggesting that they may be mentally ill: --
His gaslighting was a deliberate attempt to convince her that she was losing her grasp on reality.
Gaslighting is a form of psychological abuse.
Over time he continued with this sort of gaslighting, playing with my mind.
Her father used a gaslighting tactic when he declared that she must have imagined the entire episode.
Gaslighting is the process of causing someone to doubt their own thoughts, beliefs and perceptions.