pre·​pos·​ter·​ous | \ pri-ˈpä-st(ə-)rəs How to pronounce preposterous (audio) \

Definition of preposterous

: contrary to nature, reason, or common sense : absurd

Other Words from preposterous

preposterously adverb
preposterousness noun

Synonyms & Antonyms for preposterous



Visit the Thesaurus for More 

Examples of preposterous in a Sentence

The whole idea is preposterous! the idea that extraterrestrials built the pyramids is preposterous
Recent Examples on the Web What’s more, the sexism in parts of the Big Book is preposterous. Virginia Heffernan, Wired, 19 Apr. 2022 Everything about its atomic structure is informed by punk values, which have become the default values for all the young adults who recall those early TV depictions of punk as preposterous and wrong. Chuck Klosterman, Men's Health, 8 Feb. 2022 Doncic has been putting up preposterous numbers, even by his gaudy standards. New York Times, 5 May 2022 Fear The Walking Dead has set up one of the most preposterous conflicts to-date in this show. Erik Kain, Forbes, 2 May 2022 All their preposterous prayers … Save me, heal me, cure me. The Salt Lake Tribune, 19 Apr. 2022 Pascal played lubricious movie star Dieter Bravo in Judd Apatow's semi-improvised comedy about a group of actors attempting to shoot a preposterous dinosaur movie during the pandemic. Clark Collis,, 19 Apr. 2022 Admiral Godfrey is sniffy about their preposterous deception proposal’s chances of success, but Churchill gives it the go-ahead, so they are installed in a basement office and put to work. David Rooney, The Hollywood Reporter, 16 Apr. 2022 This is an amusing, if preposterous plan, and one that nevertheless earns points for originality. Peter Debruge, Variety, 5 Apr. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'preposterous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of preposterous

1533, in the meaning defined above

History and Etymology for preposterous

Latin praeposterus, literally, in the wrong order, from prae- + posterus hinder, following — more at posterior

Learn More About preposterous

Time Traveler for preposterous

Time Traveler

The first known use of preposterous was in 1533

See more words from the same year

Dictionary Entries Near preposterous




See More Nearby Entries 

Statistics for preposterous

Last Updated

21 May 2022

Cite this Entry

“Preposterous.” Dictionary, Merriam-Webster, Accessed 26 May. 2022.

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

More Definitions for preposterous


pre·​pos·​ter·​ous | \ pri-ˈpä-stə-rəs How to pronounce preposterous (audio) \

Kids Definition of preposterous

: making little or no sense : foolish a preposterous excuse

More from Merriam-Webster on preposterous

Nglish: Translation of preposterous for Spanish Speakers

Britannica English: Translation of preposterous for Arabic Speakers


Test Your Vocabulary

Name That Color

  • a light greenish blue color
  • Name that color:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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