formidable

adjective

ˈfȯr-mə-də-bəl How to pronounce formidable (audio)
Definition of formidablenext
1
as in terrifying
causing fear a formidable, irascible old man who frightened the neighborhood children

Synonyms & Similar Words

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Antonyms & Near Antonyms
2
as in difficult
requiring considerable physical or mental effort running a marathon is a formidable undertaking

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 formidable Saudi Arabia has drawn two of the Muslim world’s most formidable military powers into its defense as the Iran war moves closer to the kingdom. — Abbas Al Lawati, CNN Money, 7 Aug. 2026 The course zigzagged more than 4,100 miles across the continent – a formidable journey, though one that many cars today could handle without a hiccup. — Danny Heitman, Christian Science Monitor, 7 Aug. 2026 By all accounts, Katherine was a formidable presence—intellectually engaged, fluent in multiple languages, a guiding force in her children’s lives—and the painting honors that, depicting her reading rather than posing in decorative idleness. — Carmen Rosenberg-Miller, Artforum, 6 Aug. 2026 Hooper has formidable narrative chops, and this one is a total joy to read. — Literary Hub, Literary Hub, 5 Aug. 2026 See All Example Sentences for formidable
Recent Examples of Synonyms for formidable
  1. terrifying
  2. difficult
  3. frightening
  4. challenging
  5. scary
  6. tough
  7. terrible
  8. rigorous
Adjective
  • Video captured recently in Botswana shows the terrifying moment a tourist boat had to outpace a charging hippo.
    — Maureen O'Hare, CNN Money, 15 Aug. 2026
  • The bandages, cuts and stitches were still fresh from the terrifying attack on Jones Street on Wednesday evening.
    — Tammy Mutasa, CBS News, 14 Aug. 2026
Definition of terrifying
Adjective
  • The shortcomings of Usman and Dvalishvili, future Hall of Famers, only point to how difficult the historic mark was to reach.
    — Mark Puleo, New York Times, 16 Aug. 2026
  • The Teamsters have been enthusiastically endorsing the bill specifically because, while 40-something employers would be difficult to collectively bargain against, DSP workers would be much easier to organize once within Amazon.
    — Tiana Lowe Doescher, The Washington Examiner, 15 Aug. 2026
Definition of difficult
Adjective
  • And what is perhaps most frightening, in those despondent moments that inevitably follow the exhilarating rush, is the realization that this enveloping abyss retains the imprint of our actions.
    — Jan Tumlir, Artforum, 5 Aug. 2026
  • The video quickly sparked a wave of reactions on social media, with many viewers expressing relief that the ride's safety restraints appeared to do their job despite the frightening ordeal.
    — Stepheny Price, FOXNews.com, 5 Aug. 2026
Definition of frightening
Adjective
  • The champion faced a challenging opponent, as Garry forced him to work hard for seven takedowns and inflicted some facial damage.
    — Brian Mazique, Forbes.com, 16 Aug. 2026
  • The current outbreak, caused by the rare Bundibugyo Ebola virus, is unfolding in some of the most challenging conditions imaginable.
    — ABC News, ABC News, 15 Aug. 2026
Definition of challenging
Adjective
  • No prominent leader has explained what governments will do when the scariest AI capabilities are diffused around the world and become accessible to criminals and terrorists.
    — Foreign Affairs, Foreign Affairs, 10 Aug. 2026
  • Universal’s annual Halloween Horror Nights is looking like an even scarier place to have a nice daaaate.
    — James Hibberd, HollywoodReporter, 10 Aug. 2026
Definition of scary
Adjective
  • Coventry, for example, face Manchester City away in Gameweek Three, while some of the teams worth targeting early like Manchester United, Chelsea and Sunderland have tougher fixtures in Gameweeks Three or Four.
    — Abdul Rehman, New York Times, 14 Aug. 2026
  • This summer has seen a confluence of challenges, including excessive heat that allows food contamination to grow and a pathogen that’s particularly tough to pin down.
    — Deidre McPhillips, CNN Money, 13 Aug. 2026
Definition of tough
Adjective
  • That Crowley came from behind to win was a testament to Evers’ grit and determination to keep the nomination from Hong, whom Evers said was unlikely to win in November, and to how terrible of a campaigner Hong turned out to be in the home stretch.
    — The Editorial Board, Chicago Tribune, 12 Aug. 2026
  • Although the Constitution requires congressional involvement in war-making, Trump like Nixon disdained that mandate with terrible consequences.
    — Elizabeth Holtzman, New York Daily News, 12 Aug. 2026
Definition of terrible
Adjective
  • Thanks to the shrinking publishing industry and dwindling writerly job market, the internet is rife with smart freelance editors, rigorous copy editors, and award-winning authors moonlighting as book doulas.
    — Keziah Weir, Vanity Fair, 13 Aug. 2026
  • Every personal loan article is based on rigorous reporting by our team of expert writers and editors with extensive knowledge of personal loan products.
    — Jasmin Suknanan, CNBC, 13 Aug. 2026
Definition of rigorous

Browse Nearby Words

formidability
formidable
forming
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Cite this Entry

“Formidable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/formidable. Accessed 16 Aug. 2026.

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Nglish: Translation of formidable for Spanish Speakers

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