1. the delusion that things (or everything, including the self) do not exist; a sense that everything is unreal; [syn: nihilistic delusion, nihilism]
WordNet (r) 3.0 (2006):
nihilistic delusion
n 1: the delusion that things (or everything, including the
self) do not exist; a sense that everything is unreal [syn:
nihilistic delusion, nihilism]