a person afflicted with megalomania.


Also meg·a·lo·ma·ni·a·cal [meg-uh-loh-muh-nahy-uh-kuh l] /ˌmɛg ə loʊ məˈnaɪ ə kəl/, meg·a·lo·man·ic [meg-uh-loh-man-ik] /ˌmɛg ə loʊˈmæn ɪk/. of, relating to, or suggesting megalomania or a person who is afflicted with it.

Origin of megalomaniac

First recorded in 1885–90; megalo- + maniac Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for megalomaniacal

Contemporary Examples of megalomaniacal

Historical Examples of megalomaniacal

  • Initial paranoia, with megalomaniacal symptoms, on the basis of hereditary inferiority, with vicarious genius.

    The Quest

    Frederik van Eeden

  • He'd been a musical-comedy producer so long that no megalomaniacal absurdity could take him by surprise.

    The Real Adventure

    Henry Kitchell Webster

Word Origin and History for megalomaniacal

1884, from megalomaniac + -al (1).


1882 (n.), 1883 (adj.), from megalomania (q.v.).

The megalomaniac differs from the narcissist by the fact that he wishes to be powerful rather than charming, and seeks to be feared rather than loved. To this type belong many lunatics and most of the great men of history. [Bertrand Russell, "The Conquest of Happiness"]
Online Etymology Dictionary, © 2010 Douglas Harper