Gaslighting refers to and is the process of someone manipulating someone through use of psychological means into questioning their own sanity.
Gaslighting is a form of psychological manipulation in which a person seeks to sow the seeds of doubt in a targeted individual or in members of a targeted group which makes them question their own memory, perception, and sanity.
An example of gaslighting someone would be withholding.
The withholding is a gaslighting technique where the abuser feigns a lack of understanding, refuses to listen and declines to share his emotions.
I'm not listening to that crap again tonight, would be a gaslighting example.