preposterous

adjective

pri-ˈpä-st(ə-)rəs How to pronounce preposterous (audio)
Definition of preposterousnext
1
as in absurd
conceived or made without regard for reason or reality the idea that extraterrestrials built the pyramids is preposterous

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms
2
as in silly
showing or marked by a lack of good sense or judgment a preposterous suggestion to go swimming in this freezing weather

Synonyms & Similar Words

Antonyms & Near Antonyms
3
as in ridiculous
so foolish or pointless as to be worthy of scornful laughter the movie thriller had such a preposterous plot that we were on the edge of our seats snickering

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of preposterous The idea of trying to fight inflation by slowing economic activity is preposterous. — Steve Forbes, Forbes.com, 12 June 2026 Which are totally preposterous. — Virginia Chamlee, PEOPLE, 12 June 2026 The series is wildly atmospheric with plenty of gallows humor and more than a few truly loopy plotlines, but great fun with Davis managing, as ever, to sell even the most preposterous scene. — Culture Critic, Los Angeles Times, 8 June 2026 The statement was greeted by the event moderator and the other laureates as preposterous enough to make the simulation hypothesis seem reasonable by comparison. — Quanta Magazine, 8 June 2026 See All Example Sentences for preposterous
Recent Examples of Synonyms for preposterous
  1. absurd
  2. silly
  3. ridiculous
  4. bizarre
  5. foolish
  6. pathetic
  7. unreal
  8. stupid
Adjective
  • In each social-commentary-teetering-on-horror episode, Nanno is a pupil at a different school, picture perfect and scanning the room for whatever secrets — an abusive teacher, an absurd hierarchical system, petty jealousy — demand to be revealed.
    — Culture Critic, Los Angeles Times, 15 July 2026
  • Cattelan spoke to the Financial Times about the strange afterlife of the work, which has become both a symbol of the art market’s excesses and a reminder of his talent for turning absurd ideas into global spectacles.
    — George Nelson, ARTnews.com, 13 July 2026
Definition of absurd
Adjective
  • She’s seen during a dance rehearsal, a silly social media clip, and onstage from their Lollapalooza set, the latter of which came before her announcement in February to step away from Katseye.
    — Jaeden Pinder, Rolling Stone, 15 July 2026
  • Starring British comedy favourites such as Kevin Eldon and Miranda Hart, Hyperdrive is a very silly show that ended up more like a workplace sitcom in space rather than the next Red Dwarf.
    — William Worrall, Space.com, 15 July 2026
Definition of silly
Adjective
  • Four-nil down at half-time, Mbappe started a ridiculous comeback.
    — James Horncastle, New York Times, 19 July 2026
  • In the face of climate change, such woo woo aphorisms seem ridiculous, naive, and cruel.
    — Josh Fox, IndieWire, 17 July 2026
Definition of ridiculous
Adjective
  • When this place is eventually gone — a phrase that feels truly bizarre given the environment this summer and the half-century preceding it — the lasting images will be the seas of red.
    — Sam McDowell Updated July 3, Kansas City Star, 4 July 2026
  • Continue reading … 'DEEPLY WEIRD' — CNN panel's bizarre 'read as Jewish' comment about a senator draws fierce blowback.
    — , FOXNews.com, 3 July 2026
Definition of bizarre
Adjective
  • Johnson continued this week to push for his foolish and counterproductive desire to impose a $33-per-month tax on each Chicago job generated by the city’s largest private-sector employers.
    — The Editorial Board, Chicago Tribune, 10 July 2026
  • As is, this is a foolish thriller that prompts the occasional snicker but not much more.
    — Randy Myers, Mercury News, 9 July 2026
Definition of foolish
Adjective
  • Never in my lifetime has pathetic nostalgia for the white man’s republic been closer to the center of power.
    — Brian DeLay, Mercury News, 4 July 2026
  • Instagram Plus is social media’s newest low—a company preying on our most pathetic impulses, for the price of a small iced coffee.
    — Annie Joy Williams, The Atlantic, 28 June 2026
Definition of pathetic
Adjective
  • These digital technologies have also created an echo chamber of self-confirming views, which has contributed to an unreal, simplified view of a nuanced, messy world.
    — Simon Sebag Montefiore, The Atlantic, 28 June 2026
  • The air is fresh and clean, the pace is calm, and the views are unreal.
    — Alexandra Emanuelli, Travel + Leisure, 28 June 2026
Definition of unreal
Adjective
  • There are plenty of videos from Yellowstone National Park involving tourists doing breathtakingly stupid things around wild animals.
    — Amber Harding OutKick, FOXNews.com, 12 July 2026
  • Even when Romanzy goes off on how stupid and ugly Caleb is — and gossips that his parents abandoned him because something must be wrong with him — Mary goes along with it.
    — Maggie Fremont, Vulture, 11 July 2026
Definition of stupid

Browse Nearby Words

prepossessions
preposterous
preposterousness
See all Nearby Words

Cite this Entry

“Preposterous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/preposterous. Accessed 20 Jul. 2026.

Copy Citation

More from Merriam-Webster on preposterous

Nglish: Translation of preposterous for Spanish Speakers

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of raffish

See Definitions and Examples »

Popular in Grammar & Usage

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Do you 'say your piece' or 'say your peace'?

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words
See More

Popular in Wordplay

See More

14 Phobias You Probably Haven't Heard Of

It's a Scorcher! Words for the Summer Heat

The Longest Long Words List

Ten Words Ending with a Silent ‘T’

Why do we say 'fly off the handle'?
See More

Popular

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

14 Phobias You Probably Haven't Heard Of

It's a Scorcher! Words for the Summer Heat
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
child-detective
Spot the Misspelled Word July 2026 Those little red underlines can't help you now...
See All