delusions of grandeur is a noun meaning "a delusion (common in paranoia) that you are much greater and more powerful and influential than you really are". It carries one recorded sense.
a delusion (common in paranoia) that you are much greater and more powerful and influential than you really are
Definitions, synonyms and semantic relations for delusions of grandeur come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .