Deception: The act of pretending to be somebody else in order to trick people, or an occasion on which this is done.

Imposture is what imposters do.

Someone who seems like an upright citizen, but really has no spine.

Pretending to be somebody your not because you think society will treat you better

sus, being an impostee in amogus game. amogus is well known game of impostors and crewmates, imposta is being sused and crew mates win the game.