1
as in terrifying
causing fear
a formidable, irascible old man who frightened the neighborhood children
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2
as in difficult
requiring considerable physical or mental effort
running a marathon is a formidable undertaking
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Example Sentences
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Recent Examples of formidable
Mistakenly identified as Earth’s ambassador to the rest of the universe, and completely unprepared for that kind of pressure, Elio must form new bonds with eccentric alien lifeforms, survive a series of formidable trials, and somehow discover who he is truly meant to be.
—
Giana Levy, Variety, 10 Sep. 2025
Cancer remains one of humanity’s most formidable challenges, claiming the lives of millions every year despite decades of medical progress.
—Atharva Gosavi, Interesting Engineering, 10 Sep. 2025
But the Lynx’s bench has been formidable all season.
—Nathan Canilao, Mercury News, 10 Sep. 2025
But heading into a Week 2 matchup against the formidable Cincinnati Bengals offense, that could be set to change.
—Reice Shipley, MSNBC Newsweek, 10 Sep. 2025
See All Example Sentences for formidable
Giana Levy, Variety, 10 Sep. 2025
Cancer remains one of humanity’s most formidable challenges, claiming the lives of millions every year despite decades of medical progress.
—Atharva Gosavi, Interesting Engineering, 10 Sep. 2025
But the Lynx’s bench has been formidable all season.
—Nathan Canilao, Mercury News, 10 Sep. 2025
But heading into a Week 2 matchup against the formidable Cincinnati Bengals offense, that could be set to change.
—Reice Shipley, MSNBC Newsweek, 10 Sep. 2025
See All Example Sentences for formidable
Recent Examples of Synonyms for formidable
Adjective
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These shifting climates intimately shaped the biosphere over this span (and vice versa), and in occasional terrifying pulses, threatened to end it.—
Peter Brannen,
Quanta Magazine,
15 Sep. 2025
-
That was a terrifying last four days.—
Marina Watts,
PEOPLE,
15 Sep. 2025
Adjective
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Ncell, Nepal’s second-largest telecommunications service provider, noted that shutting down all platforms at once was, in any case, technically difficult and warned that the move would severely impact business.—
Nir Kshetri,
The Conversation,
14 Sep. 2025
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Last summer, after years of hip problems and some difficult surgeries to address them, Jill had an operation that went poorly.—
Bianca Bosker,
The Atlantic,
14 Sep. 2025
Adjective
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The frightening illness took place just two weeks after he was named MVP of his little league baseball team.—
Madison E. Goldberg,
PEOPLE,
16 Sep. 2025
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As the frightening futures foretold grow nearer, the details are also growing more precise.—
Zack Savitsky,
Quanta Magazine,
15 Sep. 2025
Adjective
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Partnered with Val Chmerkovskiy, Earle tackled a challenging routine that impressed the judges.—
Amanda Castro,
MSNBC Newsweek,
17 Sep. 2025
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Real-world tests The scientists tested THOR AI on several challenging copper, argon, and tin cases.—
Atharva Gosavi,
Interesting Engineering,
16 Sep. 2025
Adjective
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There were plenty of distraction at the in-stadium clinic to make a trip to the dentist a little less scary for the children.—
Tammy Ljungblad,
Kansas City Star,
10 Sep. 2025
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And yet … those conversations are also entertainingly provocative, and they’re accompanied by some of the scariest and most disgusting scenes the series has delivered up to now.—
Noel Murray,
Vulture,
10 Sep. 2025
Adjective
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The backcourt duo of Courtney Williams and Natisha Hiedeman, also known as the StudBudz, are shifty, tough shot-making guards who can get hot in a hurry.—
Nathan Canilao,
Mercury News,
13 Sep. 2025
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And that’s tough on those guys.—
Bill Plunkett,
Oc Register,
13 Sep. 2025
Adjective
-
Yes, there are so much terrible stuff online.—
ABC News,
ABC News,
14 Sep. 2025
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But that obviously terrible call compromised the integrity of that game last night, and that's something the sport should be looking to avoid.—
Fabian Ardaya,
New York Times,
13 Sep. 2025
Adjective
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For the next six years, Kira endured a rigorous drug treatment regime and was frequently in and out of hospitals.—
Ruchi Kumar,
NPR,
14 Sep. 2025
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During a break in the rigorous shooting schedule for the limited series, which also stars Emma Corrin and Jack Lowden, Partridge was able to squeeze in the trip with old college friends.—
Alex Ritman,
Variety,
12 Sep. 2025
Cite this Entry
“Formidable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/formidable. Accessed 18 Sep. 2025.
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