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 As two formidable women go head-to-head, their battle for the soul of Longview exposes the secrets, resentments, and desires lurking beneath its picture-perfect surface. — Matt Grobar, Deadline, 9 Oct. 2026 Their gains are in stark contrast to AT & T , Verizon Communications , and T-Mobile , all down sharply on prospects of SpaceX becoming a formidable rival in mobile broadband; of the three, T-Mobile was down the most with a roughly 10% decline. — Tobias Burns, CNBC, 9 Oct. 2026 Lawrence and Jonathan Allen form a formidable interior defensive lineman duo that has the Bengals ranked eighth against the run through four weeks. — David Furones, Sun Sentinel, 8 Oct. 2026 Isaias will likely make landfall sometime early Saturday morning as a weakening, but formidable hurricane. — Rachael Jay, CBS News, 8 Oct. 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
  • Fifty years ago, scientists pioneering a terrifying gene-splicing technology figured out a way to collectively hit pause.
    — Nick Fountain, NPR, 14 Oct. 2026
  • Don’t worry, the breakdown starts in a hurry and Cardellini is terrifying, if perhaps not as sympathetic as the series requires long-term.
    — Daniel Fienberg, HollywoodReporter, 13 Oct. 2026
Definition of terrifying
Adjective
  • Performances across the board are strong, even if the characterizations themselves are more difficult to embrace.
    — Guy Lodge, Variety, 11 Oct. 2026
  • Making short-haul rail more competitive Parallel argues that its system could open routes that are currently difficult for conventional rail services to serve economically, particularly journeys under 500 miles.
    — Kaif Shaikh, Interesting Engineering, 11 Oct. 2026
Definition of difficult
Adjective
  • Doyle has played all kinds of frightening characters in his five years at Markoff's.
    — Ayesha Rascoe, NPR, 11 Oct. 2026
  • The trailer for the movie, which includes a particularly frightening jump scare from Chastain as Other Mommy, went viral online after playing in front of theatrical screenings.
    — Jordan Moreau, Variety, 9 Oct. 2026
Definition of frightening
Adjective
  • Disappointingly, her screenplay proceeds to unfold in a procession of frustrating get-outs and compromises, repeatedly choosing the least interesting or challenging direction to take this would-be throuple.
    — Guy Lodge, Variety, 11 Oct. 2026
  • Oscar-winning DoP Greig Fraser knows a thing or two about working on challenging movies, from Dune to The Batman, Rogue One to Zero Dark Thirty.
    — Andreas Wiseman, Deadline, 10 Oct. 2026
Definition of challenging
Adjective
  • The Rangers announced the devastating news on Saturday following a scary injury in which the 30-year-old’s right skate jammed into the post while gliding across his crease in the first period.
    — Scott Thompson OutKick, FOXNews.com, 10 Oct. 2026
  • Watching her film in the water was one of the scariest moments as a mom, because the tank was pitch black.
    — Tanya Fedak, Variety, 10 Oct. 2026
Definition of scary
Adjective
  • Celebrity hairstylist Brian Magallones considers this the perfect balance between a not-too-fussy and not-too-structured chignon, a style that sounds tough to style without a professional team but is actually quite easy to master at-home.
    — Kaleigh Werner, Footwear News, 13 Oct. 2026
  • Coming off that dominant performance against the Yankees, Rasmussen went six-plus tough innings.
    — Rob Maaddi, Los Angeles Times, 13 Oct. 2026
Definition of tough
Adjective
  • And then none of it mattered because his special teams bailed him out with a big kick return (thanks to a terrible decision by Eagles coach Nick Sirianni to even allow a kick return in the first place) followed by a walk-off field goal.
    — Dan Zaksheske OutKick, FOXNews.com, 12 Oct. 2026
  • The story follows the transformation of Adriana (Colin), a woman shattered by a terrible murder and who discovers the strength to start over, driven by an unquenchable thirst for justice.
    — Rafa Sales Ross, Variety, 11 Oct. 2026
Definition of terrible
Adjective
  • Finally, Horrigan noted that inbound freight deserves the same rigorous management as outbound, stressing that procurement teams need visibility into the freight component of supplier pricing.
    — Glenn Taylor, Footwear News, 14 Oct. 2026
  • The whole piece is about the free and rigorous interplay of line.
    — Zachary Fine, New Yorker, 14 Oct. 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 15 Oct. 2026.

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