Dictionary.com
Thesaurus.com
Synonyms

grandiose

American  
[gran-dee-ohs, gran-dee-ohs] / ˈgræn diˌoʊs, ˌgræn diˈoʊs /

adjective

  1. affectedly grand or important; pompous.

    grandiose words.

    Synonyms:
    extravagant, high-flown, splashy, flamboyant, affected, pretentious
  2. more complicated or elaborate than necessary; overblown.

    a grandiose scheme.

  3. grand in an imposing or impressive way.

  4. Psychiatry. having an exaggerated belief in one's importance, sometimes reaching delusional proportions, and occurring as a common symptom of mental illnesses, as manic disorder.


grandiose British  
/ ˌɡrændɪˈɒsɪtɪ, ˈɡrændɪˌəʊs /

adjective

  1. pretentiously grand or stately

  2. imposing in conception or execution

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

Grandiose, showy, ostentatious, pretentious all refer to conspicuous outward display, either designed to attract attention or likely to do so. Grandiose and showy are alike in that they may suggest impressiveness that is not objectionable: the grandiose sweep of the arch; a fresh bouquet of showy zinnias. Grandiose, however, most often implies inflation or exaggeration to the point of absurdity: grandiose, impractical plans; a ridiculously grandiose manner. Showy sometimes suggests a meretricious gaudiness or flashiness: a showy taste in dress. Ostentatious, which refers to behavior or manner clearly designed to impress, also has negative connotations: an ostentatious display of wealth; an assumption of superiority too ostentatious to be ignored. Pretentious, like the preceding term, is always derogatory, implying falseness or exaggeration in claims made or implied: natural and straightforward, not pretentious; pretentious language designed to mask the absence of real content.

Other Word Forms

  • grandiosely adverb
  • grandioseness noun
  • grandiosity noun

Etymology

Origin of grandiose

First recorded in 1830–40; from French, from Italian grandioso, from Latin grandi(s) “grand” + -ōsus adjective suffix ( -ose 1 )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"The grandiose promises of destroying Hezbollah and Hamas and Iran are not coming true," said Dahlia Scheindlin, a Policy Fellow at the Mitvim Institute, a think tank focused on Israeli foreign policy.

From BBC • Apr. 1, 2026

Mr. Sokolov styles his work as an homage to 1970s grindhouse cinema, complete with cheesy sound effects, slo-motion, and grandiose musical cues.

From The Wall Street Journal • Mar. 26, 2026

Chopra’s parents, aunts and uncles all live in the A-19 Modern Colony apartment complex, weighed down by the grandiose legacy of their late family elder.

From Los Angeles Times • Mar. 23, 2026

This kind of content is what Donaldson has become known for: convoluted challenges and grandiose philanthropic efforts.

From MarketWatch • Mar. 17, 2026

He found himself in a grandiose lobby with white marble floors, ceilings almost two stories high, and pendant lights hanging from the ceiling.

From "Reaching for the Moon" by Katherine Johnson