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 researchers identified a previously unrecognized role for the MHC class I pathway in immune responses driven by CD4+ T cells, challenging the traditional view that these pathways operate separately.
From Science Daily • Jun. 4, 2026
Women’s Open, wants Riviera Country Club to be an challenging test and a showcase for women’s golf.
From Los Angeles Times • Jun. 3, 2026
Ryan told MLAs about the case of an autistic teenager with challenging behaviours and "significant social and emotional support needs".
From BBC • Jun. 3, 2026
Baldy is thinking about how she will cover the 2027 campaign, but believes she will not interview candidates, an exercise she considers challenging.
From Barron's • Jun. 3, 2026
“It’s just a very challenging plane geometry problem. How do we find ‘X’ without knowing ‘A’? I may need to ask an expert for help.”
From "The Smartest Kid in the Universe" by Chris Grabenstein
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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