A hybrid of ghosting and gaslighting. Ceasing all communication with someone and then, when they attempt to contact you, pretending like you have no idea who they are or what they are talking about.
John: "Guys, did you hear what Christina did?"
Catherine: "No, what?"
John: "She was too chicken sh*t to quit her job, so she just didn't show up and then when her boss, Will, called her, she acted like she didn't know who he was!"
Catherine: "Oh, wow, she's totally ghostlighting that dude, eh?"