formidable
adjective
for·mi·da·ble
ˈfȯr-mə-də-bəl 
fȯr-ˈmi-də-bəl
fȯr-ˈmi-də-bəl
fər-ˈmi-də-bəl
1
: causing fear, dread, or apprehension
a formidable prospect
2
: having qualities that discourage approach or attack
a formidable opponent
3
: tending to inspire awe or wonder : impressive
a formidable accomplishment
Examples of formidable in a Sentence
She was known throughout Manchester as a formidable woman, and being educated had only piled more formidability on top of what she had been born with.
—
Edward P. Jones, The Known World, 2003
The technology was formidable: using two and a half million rivets, 300 steeplejacks working flat out would run it up in the space of two years …
—Alistair Horne, Seven Ages of Paris, 2002
Alta is reached by a hairpin road that climbs steadily upward—a ride of thirty minutes or so, depending on road and weather conditions—through some of the most formidable mountain scenery in the country.
—Cynthia Zarin, New Yorker, 23 Mar. 1992
The mountains were a formidable barrier.
He has mastered a formidable amount of material.
Edward P. Jones, The Known World, 2003
The technology was formidable: using two and a half million rivets, 300 steeplejacks working flat out would run it up in the space of two years …
—Alistair Horne, Seven Ages of Paris, 2002
Alta is reached by a hairpin road that climbs steadily upward—a ride of thirty minutes or so, depending on road and weather conditions—through some of the most formidable mountain scenery in the country.
—Cynthia Zarin, New Yorker, 23 Mar. 1992
The mountains were a formidable barrier.
He has mastered a formidable amount of material.
Recent Examples on the Web
Yes, this Jaguars pass rush is formidable; Josh Hines-Allen is no joke.
—Alex Zietlow, Charlotte Observer, 7 Sep. 2025
With the Chiefs appearing more vulnerable in a season coming off a Super Bowl trouncing, Buffalo—which opens its 2025 campaign Sunday night at home against another formidable foe, the Baltimore Ravens—is poised for a breakthrough.
—Sean Gregory, Time, 6 Sep. 2025
The Lebanese government welcomed a plan presented by the army on Friday to disarm Hezbollah, the country’s most formidable military force, in an unprecedented move that risks sparking internal conflict.
—Mostafa Salem, CNN Money, 5 Sep. 2025
So, while teammates are cracking jokes at one another, Kelce and Mahomes know work needs to be done on Friday night to ensure a 1-0 start to the season against a formidable opponent.
—Scott Thompson, FOXNews.com, 5 Sep. 2025
See All Example Sentences for formidable
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Alex Zietlow, Charlotte Observer, 7 Sep. 2025
With the Chiefs appearing more vulnerable in a season coming off a Super Bowl trouncing, Buffalo—which opens its 2025 campaign Sunday night at home against another formidable foe, the Baltimore Ravens—is poised for a breakthrough.
—Sean Gregory, Time, 6 Sep. 2025
The Lebanese government welcomed a plan presented by the army on Friday to disarm Hezbollah, the country’s most formidable military force, in an unprecedented move that risks sparking internal conflict.
—Mostafa Salem, CNN Money, 5 Sep. 2025
So, while teammates are cracking jokes at one another, Kelce and Mahomes know work needs to be done on Friday night to ensure a 1-0 start to the season against a formidable opponent.
—Scott Thompson, FOXNews.com, 5 Sep. 2025
See All Example Sentences for formidable
Cite this Entry
“Formidable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/formidable. Accessed 9 Sep. 2025.
Copy CitationKids Definition
formidable
adjective
for·mi·da·ble
ˈfȯr-məd-ə-bəl
also
fȯr-ˈmid-
1
: causing fear or dread
a formidable foe
2
: offering serious difficulties
the mountains were a formidable barrier
3
: very impressive
had won a formidable number of medals
formidableness
noun
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