User blog comment:MiniDaggers/RWBY Volume 4 Commentary Summary/@comment-25936766-20170623001241/@comment-25936766-20170624001232

Gaslight as psychological manipulation is........making someone doubt what they think it's real.

For example, pretending to be innocent, with enough perseverance to make the accuser doubt that you are guilty.

Or moving things subtly around their house, making them wake up with things in places different than what they remember. This one easily makes people go insane.

I know calling Gaslamp "Gaslight" could confuse people, though it rolls off the tongue better for me. And generally, the context allows people to tell the difference. Hopefully.