- present participle of challenge.
challenging
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The hiker was found below the notorious “final 400” stretch, a dangerously steep chute along the route that is particularly challenging to navigate in the winter months.
From Los Angeles Times ● Oct. 8, 2026
The tiny creature was found to interpret DNA instructions in a way researchers had never documented before, challenging a long held assumption about how the genetic code works.
From Science Daily ● Oct. 8, 2026
This has made maintaining a presence in China more challenging, yet still essential for surviving the EV transition, they say.
From The Wall Street Journal ● Oct. 7, 2026
Elsewhere, performances have reflected a mixed and challenging year for technology and the AI trade, with Apple up 22%, Microsoft stock is up 9%, Palantir up 8% and Tesla down 15%.
From MarketWatch ● Oct. 7, 2026
Whenever she cracked one system, more challenging ones rose to take its place—and day after day, she was forced to grapple with them alone.
From "The Woman All Spies Fear" by Amy Butler Greenfield
Vocabulary lists containing challenging
Academic Vocabulary Toolkit 1, Words 11-20
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Towers Falling
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Persuasive and Assertive Tones
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