megalomaniac

noun
meg·​a·​lo·​ma·​ni·​ac | \ -ˈmā-nē-ˌak How to pronounce megalomaniac (audio) \

Medical Definition of megalomaniac

: one affected with or exhibiting megalomania

Learn More About megalomaniac

Dictionary Entries Near megalomaniac

megalomania

megalomaniac

megalomaniacal

See More Nearby Entries 

Cite this Entry

“Megalomaniac.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/megalomaniac. Accessed 16 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on megalomaniac

Thesaurus: All synonyms and antonyms for megalomaniac

Nglish: Translation of megalomaniac for Spanish Speakers

WORD OF THE DAY

Test Your Vocabulary

Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!