1. a delusion (common in paranoia) that you are much greater and more powerful and influential than you really are

2. what occurs when you have feelings for someone that are so extreme, and you describe them, but the other person doesn't feel the same way... at all.
mitch is having delusions of grandeur about ange again.
by domokun December 11, 2004
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Illusions of grandeur - schizophrenic

Delusions of grandeur - crystal meth addicted
(Soliloquy to self) I'm enormously proud of that lecture I produced at the friar's club last evening. My delusions of grandeur had kicked in just in time for the thing to roll right off my tongue with such ease, power, effectiveness.

2) (social workers comparing notes) - "the boy ain't schizophrenic. He high on crystal, caught up in his own delusions of grandeur and shit.
by #antonio October 29, 2018
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