Origin: Latin suffix -ory
Illusory has 2 different meanings across 1 category:
based on or having the nature of an illusion
"illusive hopes of finding a better job"
"Secret activities offer presidents the alluring but often illusory promise that they can achieve foreign policy goals without the bothersome debate and open decision that are staples of democracy"
Resulting from an illusion; deceptive, imaginary, unreal