Search Dictionary
Definition of megalomaniac

megalomaniac

/ˌmɛɡəloʊˈmeɪniæk/
meg · a · lo · ma · ni · ac
Adverb:megalomaniacally
•
Plural:megalomaniacs
•
Adjective:megalomaniacal
JUMP TO:

megalomaniac Lexical Profile

megalomaniac Game Scores & Validity

• noun

1

A person who is obsessed with their own power and importance, or who suffers from delusions of grandeur.

Example

"Critics described the ruthless corporate executive as a megalomaniac who refused to listen to his advisors."

Synonyms
View all synonyms for megalomaniac

• adjective

1

Characterized by an obsessive desire for power, wealth, or grandiose self-importance; exhibiting delusions of grandeur.

Example

"The film's villain is driven by a megalomaniac scheme to control the world's water supply."

Synonyms
View all synonyms for megalomaniac
Antonyms
View all antonyms for megalomaniac

• Rhymes for megalomaniac

• Nearby Words

megaloceros
megalodon
megalomania
megalomaniac
megalopolis
megamall
megamerger

Word Origin & Etymology

Coined in the late 19th century from French 'mégalomane', ultimately derived from Ancient Greek 'megas' (great) and 'mania' (madness).

Cite this Entry

Wordmom. (2026). Definition of Megalomaniac. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/megalomaniac
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.