[gas_dr]

As with others you clearly do not understand the meaning of this phrase. It’s ok. Very few people do.

[Sicon]

“Gaslighting is a form of emotional abuse that's seen in abusive relationships. It's the act of manipulating a person by forcing them to question their thoughts, memories, and the events occurring around them. A victim of gaslighting can be pushed so far that they question their own sanity.“

Or you could go with “smarmy_dr”, or “insufferably_pompous_dr”...

[MayflowerMadam]

It’s from the movie. A big discussion isn’t necessary.

[Sicon]

Or perhaps this definition is more suitable...

”Gaslighting is a colloquialism that is simply defined as to make someone question their reality. The term is also used, informally, to describe the persistent promotion of a false narrative by someone which ultimately causes another (a person or a group of people) to question their perceptions or memory. These situations can become emotionally traumatic when the audience is fearful of losses associated with challenging the false narrative, there is a power dynamic, or the audience is otherwise vulnerable.